subject:(visuomotor)

Seton Hall University

1. LeBlanc, Andrew D. Visuomotor Adaptation with Augmented Feedback.

Degree: < – Please Select One – >, Accounting, 2008, Seton Hall University

URL: https://scholarship.shu.edu/theses/92

. Advisors/Committee Members: Kelly M. Goedert.

Subjects/Keywords: Visuomotor; Psychology

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APA (6^th Edition):

LeBlanc, A. D. (2008). Visuomotor Adaptation with Augmented Feedback. (Masters Thesis). Seton Hall University. Retrieved from https://scholarship.shu.edu/theses/92

Chicago Manual of Style (16^th Edition):

LeBlanc, Andrew D. “Visuomotor Adaptation with Augmented Feedback.” 2008. Masters Thesis, Seton Hall University. Accessed March 07, 2021. https://scholarship.shu.edu/theses/92.

MLA Handbook (7^th Edition):

LeBlanc, Andrew D. “Visuomotor Adaptation with Augmented Feedback.” 2008. Web. 07 Mar 2021.

Vancouver:

LeBlanc AD. Visuomotor Adaptation with Augmented Feedback. [Internet] [Masters thesis]. Seton Hall University; 2008. [cited 2021 Mar 07]. Available from: https://scholarship.shu.edu/theses/92.

Council of Science Editors:

LeBlanc AD. Visuomotor Adaptation with Augmented Feedback. [Masters Thesis]. Seton Hall University; 2008. Available from: https://scholarship.shu.edu/theses/92

University of Texas – Austin

2. Lewis, Melissa Marie. Effects of varying force levels and combinations of force application and release during an isometric pinch force task.

Degree: MSin Kinesiology, Kinesiology, 2014, University of Texas – Austin

URL: http://hdl.handle.net/2152/61671

► Fine motor control is important for the completion of many activities of daily living, such as writing, eating, buttoning a shirt, and texting. All these… (more)

▼ Fine motor control is important for the completion of many activities of daily living, such as writing, eating, buttoning a shirt, and texting. All these tasks require a high amount of continuous coordination and regulation of increasing and decreasing forces between multiple digits using sub-maximal force levels to successfully accomplish the task. Thus understanding the coordination of force regulation by the thumb and index finger at these sub-maximal force levels is a relevant topic especially for rehabilitation and instrumentation. This study was designed to investigate how accuracy and smoothness of performance of an isometric pinch force tracking task is affected by changing the level of forces required to perform the task and by different combinations of application and release of force by the thumb and index finger. Twenty two healthy, right handed adult participants between the ages of 18-30 were asked to manipulate a cursor to track a moving target ball counterclockwise around a prescribed path using the thumb and index finger of the right hand only. The goal of the task was to keep the cursor as close as possible to the moving target throughout the entire trial. Each participant was given 50 practice trials: 25 at 24% MVC and 25 at 12% MVC. For the 40 experimental trials, participants returned 24 hours later to complete 10 trials at each of the following force levels: 4%, 8%, 16%, and 32%. RMSE and CVE were calculated for each digit (thumb and index finger) as well as the combined digits and were used as indicators of accuracy and smoothness, respectively. Results showed significant differences in all dependent variables with p-values less than 0.05. Task performance accuracy was found to decrease as force level increased, whereas smoothness was found to decrease as force level decreased for all three. These findings suggest that varying force levels and combinations of force application and force release can change performance of this fine motor task and should be further investigated in order to better understand mechanisms involved and for implementing new designs of equipment and diagnostic tools. Advisors/Committee Members: Abraham, Lawrence D. (advisor), Jensen, Jody (committee member).

Subjects/Keywords: Fine motor control; Visuomotor tracking

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APA (6^th Edition):

Lewis, M. M. (2014). Effects of varying force levels and combinations of force application and release during an isometric pinch force task. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/61671

Chicago Manual of Style (16^th Edition):

Lewis, Melissa Marie. “Effects of varying force levels and combinations of force application and release during an isometric pinch force task.” 2014. Masters Thesis, University of Texas – Austin. Accessed March 07, 2021. http://hdl.handle.net/2152/61671.

MLA Handbook (7^th Edition):

Lewis, Melissa Marie. “Effects of varying force levels and combinations of force application and release during an isometric pinch force task.” 2014. Web. 07 Mar 2021.

Vancouver:

Lewis MM. Effects of varying force levels and combinations of force application and release during an isometric pinch force task. [Internet] [Masters thesis]. University of Texas – Austin; 2014. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/2152/61671.

Council of Science Editors:

Lewis MM. Effects of varying force levels and combinations of force application and release during an isometric pinch force task. [Masters Thesis]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/61671

Eastern Michigan University

3. Lee, Chi-Mei. Visuomotor adaptation in young adults with and without motor difficulties.

Degree: MA, Psychology, 2012, Eastern Michigan University

URL: https://commons.emich.edu/theses/715

► Children with Developmental Coordination Disorders (DCD) have shown motor learning deficits in visuomotor adaptation tasks, and the failure of detecting errors seems to be… (more)

Subjects/Keywords: augmentation; motor difficulties; visual feedback; visuomotor adaptation; visuomotor coordination; Clinical Psychology

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APA (6^th Edition):

Lee, C. (2012). Visuomotor adaptation in young adults with and without motor difficulties. (Masters Thesis). Eastern Michigan University. Retrieved from https://commons.emich.edu/theses/715

Chicago Manual of Style (16^th Edition):

Lee, Chi-Mei. “Visuomotor adaptation in young adults with and without motor difficulties.” 2012. Masters Thesis, Eastern Michigan University. Accessed March 07, 2021. https://commons.emich.edu/theses/715.

MLA Handbook (7^th Edition):

Lee, Chi-Mei. “Visuomotor adaptation in young adults with and without motor difficulties.” 2012. Web. 07 Mar 2021.

Vancouver:

Lee C. Visuomotor adaptation in young adults with and without motor difficulties. [Internet] [Masters thesis]. Eastern Michigan University; 2012. [cited 2021 Mar 07]. Available from: https://commons.emich.edu/theses/715.

Council of Science Editors:

Lee C. Visuomotor adaptation in young adults with and without motor difficulties. [Masters Thesis]. Eastern Michigan University; 2012. Available from: https://commons.emich.edu/theses/715

Dalhousie University

4. Bishop, Ronald. Exploring the Sensorimotor Network Using Functional Connectivity and Graph Theory.

Degree: MS, School of Physiotherapy, 2014, Dalhousie University

URL: http://hdl.handle.net/10222/54014

► Background: Performing a motor task activates the sensorimotor network. Functional connectivity (FC) analysis can determine connections between distinct neural regions of a network. Graph theory… (more)

Subjects/Keywords: magnetoencephalography; functional connectivity; visuomotor; graph theory

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APA (6^th Edition):

Bishop, R. (2014). Exploring the Sensorimotor Network Using Functional Connectivity and Graph Theory. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/54014

Chicago Manual of Style (16^th Edition):

Bishop, Ronald. “Exploring the Sensorimotor Network Using Functional Connectivity and Graph Theory.” 2014. Masters Thesis, Dalhousie University. Accessed March 07, 2021. http://hdl.handle.net/10222/54014.

MLA Handbook (7^th Edition):

Bishop, Ronald. “Exploring the Sensorimotor Network Using Functional Connectivity and Graph Theory.” 2014. Web. 07 Mar 2021.

Vancouver:

Bishop R. Exploring the Sensorimotor Network Using Functional Connectivity and Graph Theory. [Internet] [Masters thesis]. Dalhousie University; 2014. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10222/54014.

Council of Science Editors:

Bishop R. Exploring the Sensorimotor Network Using Functional Connectivity and Graph Theory. [Masters Thesis]. Dalhousie University; 2014. Available from: http://hdl.handle.net/10222/54014

5. Song, Yanlong. Modulating visuomotor adaptation in young healthy adults: Effects of reward and punishment.

Degree: 2017, Iowa State University

URL: https://lib.dr.iastate.edu/etd/17323

► Recent human motor adaptation/learning studies revealed that punishment accelerates acquisition of motor memory while reward enhances consolidation of motor memory. This study tested the robustness… (more)

Subjects/Keywords: punishment; reward; savings; visuomotor adaptation; Kinesiology

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APA (6^th Edition):

Song, Y. (2017). Modulating visuomotor adaptation in young healthy adults: Effects of reward and punishment. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/17323

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Song, Yanlong. “Modulating visuomotor adaptation in young healthy adults: Effects of reward and punishment.” 2017. Thesis, Iowa State University. Accessed March 07, 2021. https://lib.dr.iastate.edu/etd/17323.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Song, Yanlong. “Modulating visuomotor adaptation in young healthy adults: Effects of reward and punishment.” 2017. Web. 07 Mar 2021.

Vancouver:

Song Y. Modulating visuomotor adaptation in young healthy adults: Effects of reward and punishment. [Internet] [Thesis]. Iowa State University; 2017. [cited 2021 Mar 07]. Available from: https://lib.dr.iastate.edu/etd/17323.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Song Y. Modulating visuomotor adaptation in young healthy adults: Effects of reward and punishment. [Thesis]. Iowa State University; 2017. Available from: https://lib.dr.iastate.edu/etd/17323

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Edinburgh

6. Bricker, Adam Michael. Visuomotor noise and the non-factive analysis of knowledge.

Degree: PhD, 2018, University of Edinburgh

URL: http://hdl.handle.net/1842/33241

► It is all but universally accepted in epistemology that knowledge is factive: S knows that p only if p. The purpose of this thesis is… (more)

Subjects/Keywords: 121; factivity; knowledge; analysis; epistemology; visuomotor noise

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APA (6^th Edition):

Bricker, A. M. (2018). Visuomotor noise and the non-factive analysis of knowledge. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/33241

Chicago Manual of Style (16^th Edition):

Bricker, Adam Michael. “Visuomotor noise and the non-factive analysis of knowledge.” 2018. Doctoral Dissertation, University of Edinburgh. Accessed March 07, 2021. http://hdl.handle.net/1842/33241.

MLA Handbook (7^th Edition):

Bricker, Adam Michael. “Visuomotor noise and the non-factive analysis of knowledge.” 2018. Web. 07 Mar 2021.

Vancouver:

Bricker AM. Visuomotor noise and the non-factive analysis of knowledge. [Internet] [Doctoral dissertation]. University of Edinburgh; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1842/33241.

Council of Science Editors:

Bricker AM. Visuomotor noise and the non-factive analysis of knowledge. [Doctoral Dissertation]. University of Edinburgh; 2018. Available from: http://hdl.handle.net/1842/33241

University of Waterloo

7. Locklin, Jason Alexander. Development of a measure of visuomotor control for assessing the long-term ef fects of concussion.

Degree: 2009, University of Waterloo

URL: http://hdl.handle.net/10012/4740

► Recently, researchers have found evidence that after a concussion, residual visuomotor control deficits may linger longer than working memory or psychomotor speed deficits. All of… (more)

Subjects/Keywords: Concussion; Visuomotor Action

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APA (6^th Edition):

Locklin, J. A. (2009). Development of a measure of visuomotor control for assessing the long-term ef fects of concussion. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/4740

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Locklin, Jason Alexander. “Development of a measure of visuomotor control for assessing the long-term ef fects of concussion.” 2009. Thesis, University of Waterloo. Accessed March 07, 2021. http://hdl.handle.net/10012/4740.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Locklin, Jason Alexander. “Development of a measure of visuomotor control for assessing the long-term ef fects of concussion.” 2009. Web. 07 Mar 2021.

Vancouver:

Locklin JA. Development of a measure of visuomotor control for assessing the long-term ef fects of concussion. [Internet] [Thesis]. University of Waterloo; 2009. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10012/4740.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Locklin JA. Development of a measure of visuomotor control for assessing the long-term ef fects of concussion. [Thesis]. University of Waterloo; 2009. Available from: http://hdl.handle.net/10012/4740

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Louisiana State University

8. Yan, Shijun. Geometric Visual Illusion Effects on Visual Perception and Visuomotor Control: Emphasis on the Vertical-Horizontal Illusion.

Degree: PhD, Biomechanics, 2020, Louisiana State University

URL: https://digitalcommons.lsu.edu/gradschool_dissertations/5215

► The focus of this dissertation was to explore the effects of potential vertical-horizontal (V-H) illusory influences on perceptuomotor control. As part of this focus,… (more)

▼ The focus of this dissertation was to explore the effects of potential vertical-horizontal (V-H) illusory influences on perceptuomotor control. As part of this focus, we examined the potential use of separate cortical visual streams: the ventral visual stream for perception and the dorsal visual stream for action. Three studies were conducted to determine the effects of the V-H illusion influences on length estimations using upper limb point-to-point movements and lower limb stepping movements, involving various illusory configurations, movement directions, gaze directions. After a short introduction (Chapter 1) and a more detailed review of existing literature (Chapter 2), we present manuscripts on three studies. In the first study, we determined that manual length estimations of perpendicular segment lengths using curved point-to-point reaches corresponded to V-H illusory influences for movements, which began on the V-H illusion configurations rather than away from the illusion center. We concluded that encouraging gaze fixation on the center of the configuration likely contributed to the greater illusory influences over sensorimotor control. In the second study (Chapter 4), we directly assessed whether restricting gaze on the configuration or movement would alter V-H illusory influences on manual length estimations. Results revealed that restricting gaze on the configuration or movement space did alter general V-H illusory influences over sensorimotor control. We determine that the exploitation of V-H illusory cues can guide of upper limb movements given the specific gaze parameters. In Chapter 5 we assessed whether restricting gaze to the configuration or movement space also maintained V-H illusory effects on length estimations using stepping movements. Results demonstrated illusory influences, which did not exist for length estimations using movements of the lower limb with different gaze restrictions, did exist for movement planning and early movement execution. We concluded that the exploitation of vertically presented V-H illusory cues cannot guide the completion of lower limb horizontal plane movements, even given specific gaze parameters. Taken together, these data provide evidence to support that given the right circumstances exploitation of simple deceptive cues can influence relative aspects of perceptuomotor control; however, people can utilize the separate pathways involving visual control for perception and action to produce manual length estimations which differ from perception.

Subjects/Keywords: motor control; visual perception; kinematics; visuomotor

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APA (6^th Edition):

Yan, S. (2020). Geometric Visual Illusion Effects on Visual Perception and Visuomotor Control: Emphasis on the Vertical-Horizontal Illusion. (Doctoral Dissertation). Louisiana State University. Retrieved from https://digitalcommons.lsu.edu/gradschool_dissertations/5215

Chicago Manual of Style (16^th Edition):

Yan, Shijun. “Geometric Visual Illusion Effects on Visual Perception and Visuomotor Control: Emphasis on the Vertical-Horizontal Illusion.” 2020. Doctoral Dissertation, Louisiana State University. Accessed March 07, 2021. https://digitalcommons.lsu.edu/gradschool_dissertations/5215.

MLA Handbook (7^th Edition):

Yan, Shijun. “Geometric Visual Illusion Effects on Visual Perception and Visuomotor Control: Emphasis on the Vertical-Horizontal Illusion.” 2020. Web. 07 Mar 2021.

Vancouver:

Yan S. Geometric Visual Illusion Effects on Visual Perception and Visuomotor Control: Emphasis on the Vertical-Horizontal Illusion. [Internet] [Doctoral dissertation]. Louisiana State University; 2020. [cited 2021 Mar 07]. Available from: https://digitalcommons.lsu.edu/gradschool_dissertations/5215.

Council of Science Editors:

Yan S. Geometric Visual Illusion Effects on Visual Perception and Visuomotor Control: Emphasis on the Vertical-Horizontal Illusion. [Doctoral Dissertation]. Louisiana State University; 2020. Available from: https://digitalcommons.lsu.edu/gradschool_dissertations/5215

Universiteit Utrecht

9. Grol, M.J. Parieto-frontal circuitry in visuomotor control.

Degree: 2008, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/25818

► One of the fundamental questions in cognitive neuroscience is the question how sensory cues influence the motor system. This thesis investigates how different circuits in… (more)

Subjects/Keywords: Sociale Wetenschappen; connectivity; human brain; fMRI; conditional motor learning; visuomotor associations

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APA (6^th Edition):

Grol, M. J. (2008). Parieto-frontal circuitry in visuomotor control. (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/25818

Chicago Manual of Style (16^th Edition):

Grol, M J. “Parieto-frontal circuitry in visuomotor control.” 2008. Doctoral Dissertation, Universiteit Utrecht. Accessed March 07, 2021. http://dspace.library.uu.nl:8080/handle/1874/25818.

MLA Handbook (7^th Edition):

Grol, M J. “Parieto-frontal circuitry in visuomotor control.” 2008. Web. 07 Mar 2021.

Vancouver:

Grol MJ. Parieto-frontal circuitry in visuomotor control. [Internet] [Doctoral dissertation]. Universiteit Utrecht; 2008. [cited 2021 Mar 07]. Available from: http://dspace.library.uu.nl:8080/handle/1874/25818.

Council of Science Editors:

Grol MJ. Parieto-frontal circuitry in visuomotor control. [Doctoral Dissertation]. Universiteit Utrecht; 2008. Available from: http://dspace.library.uu.nl:8080/handle/1874/25818

10. Azevedo Neto, Raymundo Machado de. Efeito da expectativa na reorganização das dimensões espacial e temporal em ações interceptativas.

Degree: Mestrado, Biodinâmica do Movimento Humano, 2012, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/39/39132/tde-10052012-181526/ ;

►

O presente estudo teve como objetivo avaliar o efeito da expectativa na reorganização de aspectos espaciais e temporais em ações interceptativas. O estudo foi conduzido… (more)

▼

O presente estudo teve como objetivo avaliar o efeito da expectativa na reorganização de aspectos espaciais e temporais em ações interceptativas. O estudo foi conduzido em dois experimentos, nos quais os participantes interceptaram manualmente um alvo móvel virtual em situações com diferentes probabilidades de mudança de trajetória/velocidade de deslocamento do alvo. Em ambos os experimentos foi realizada a comparação entre um grupo que recebeu informação verbal sobre a probabilidade de mudança de trajetória/velocidade (PR), e outro que não recebeu informação (SI) sobre as características probabilísticas da tarefa. Os resultados do experimento com mudança de trajetória indicaram que, além da reorganização na dimensão espacial ocorrer de maneira gradativa, as ações interceptativas parecem ter sido controladas por um mecanismo preditivo que é atualizado ao longo do tempo por informação visual. Em ambos os experimentos foi mostrado que a probabilidade do contexto influenciou as características espaciais e temporais da reorganização do movimento. Contudo, essa influência ocorreu somente no fim de uma série de tentativas. Este resultado, em conjunto com a ausência de diferença em aspectos cinemáticos e de desempenho entre os grupos experimentais, sugere que a expectativa de deslocamento futuro do alvo foi criada em função das tentativas iniciais de uma série e não pela informação verbal

The aim of the present study was to evaluate the effect of expectancy on reorganization of spatial and temporal dimensions in interceptive actions. The study was conducted through two experiments in which participants were to manually intercept a virtual moving target with different probabilities of target trajectory/velocity shift. Comparison between a group that received verbal information concerning probability of target trajectory/velocity shift (PR), and another group that did not receive that information (SI) was made in both experiments. Results of the experiment on target trajectory shift showed that, in addition to gradual movement reorganization in the spatial dimension, interceptive actions were controlled by a predictive mechanism which seemed to be continuously updated by visual information. Of main interest, it was shown that in both experiments probability of target trajectory/velocity change influenced the spatial and temporal characteristics of movement reorganization. However, this influence occurred only at the end of a series of trials. The same effect was observed in the experiment on target velocity shift. This result, adjoined with the absence of difference in kinematic and performance aspects between experimental groups, suggests that expectancy about future target displacement was created by the initial trials of a series and not by verbal information on probability of target trajectory/velocity shift

Advisors/Committee Members: Teixeira, Luis Augusto.

Subjects/Keywords: Controle motor; Integração visuomotora; Interceptação; Interception; Motor control; Visuomotor integration

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APA (6^th Edition):

Azevedo Neto, R. M. d. (2012). Efeito da expectativa na reorganização das dimensões espacial e temporal em ações interceptativas. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/39/39132/tde-10052012-181526/ ;

Chicago Manual of Style (16^th Edition):

Azevedo Neto, Raymundo Machado de. “Efeito da expectativa na reorganização das dimensões espacial e temporal em ações interceptativas.” 2012. Masters Thesis, University of São Paulo. Accessed March 07, 2021. http://www.teses.usp.br/teses/disponiveis/39/39132/tde-10052012-181526/ ;.

MLA Handbook (7^th Edition):

Azevedo Neto, Raymundo Machado de. “Efeito da expectativa na reorganização das dimensões espacial e temporal em ações interceptativas.” 2012. Web. 07 Mar 2021.

Vancouver:

Azevedo Neto RMd. Efeito da expectativa na reorganização das dimensões espacial e temporal em ações interceptativas. [Internet] [Masters thesis]. University of São Paulo; 2012. [cited 2021 Mar 07]. Available from: http://www.teses.usp.br/teses/disponiveis/39/39132/tde-10052012-181526/ ;.

Council of Science Editors:

Azevedo Neto RMd. Efeito da expectativa na reorganização das dimensões espacial e temporal em ações interceptativas. [Masters Thesis]. University of São Paulo; 2012. Available from: http://www.teses.usp.br/teses/disponiveis/39/39132/tde-10052012-181526/ ;

University of Alberta

11. Popescu, Adrian. Visual control of human gait during locomotor pointing.

Degree: PhD, Physical Education and Recreation, 2013, University of Alberta

URL: https://era.library.ualberta.ca/files/g732db37b

► Daily locomotor tasks require gait adaptations in order to match various environmental challenges. Healthy individuals rely on vision in order to make proactive gait changes… (more)

▼ Daily locomotor tasks require gait adaptations in order to match various environmental challenges. Healthy individuals rely on vision in order to make proactive gait changes as vision is the sensory modality best suited to provide accurate information about distant environmental constraints. This dissertation was concerned with investigating the adaptive locomotor strategies and the related visual sampling characteristics during locomotor pointing tasks. These goals were achieved by conducting a series of four experiments requiring participants to walk towards and accurately point with the forefoot at distantly located targets without stopping. Young and older healthy participants performed the task in different environmental setups and under various visual sampling conditions. The results clearly demonstrate that the environmental information was sampled in a predictive manner for planning proactive stepping adjustments during the target approach and for extracting limb position information in relation with the target for fine-tuning the foot trajectory prior to foot-pointing. The results also indicate that discrete visual samples were adequate to complete the tasks. Generally, vision availability amounted to less than half of the trial duration for each trial and the typical sampling strategy consisted of one or two brief visual samples such that vision was available almost all the time during the pointing step. The gaze was deployed towards targets well in advance of the foot-pointing action and it remained anchored there until about the time the foot contacted that particular target. Participants typically undershot the targets and the likelihood of overshooting the targets significantly changed with the increase in task difficulty and complexity. Older adults prematurely disengaged the gaze from the targets, consequently increasing the likelihood of target overshooting. This may indicate that the older adults need more time to plan and implement gait modulations and could be interpreted as a sign of future, naturally-occurring, and more dramatic changes in visuomotor control during adaptive locomotion. In conclusion, this work shows the existence of well-preserved yet flexible motor control strategies related to locomotor pointing tasks. With aging, these visuomotor strategies lose their effectiveness and become one of the causes liable for the increase in the rate of falling occurrences for older adults.

Subjects/Keywords: Adaptive locomotion; Task complexity; Intermittent vision; Visuomotor control; Head-free gaze

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APA (6^th Edition):

Popescu, A. (2013). Visual control of human gait during locomotor pointing. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/g732db37b

Chicago Manual of Style (16^th Edition):

Popescu, Adrian. “Visual control of human gait during locomotor pointing.” 2013. Doctoral Dissertation, University of Alberta. Accessed March 07, 2021. https://era.library.ualberta.ca/files/g732db37b.

MLA Handbook (7^th Edition):

Popescu, Adrian. “Visual control of human gait during locomotor pointing.” 2013. Web. 07 Mar 2021.

Vancouver:

Popescu A. Visual control of human gait during locomotor pointing. [Internet] [Doctoral dissertation]. University of Alberta; 2013. [cited 2021 Mar 07]. Available from: https://era.library.ualberta.ca/files/g732db37b.

Council of Science Editors:

Popescu A. Visual control of human gait during locomotor pointing. [Doctoral Dissertation]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/g732db37b

University of Waterloo

12. Skakum, Amanda. Effects of Age and Experience on Memory-Guided Movements.

Degree: 2007, University of Waterloo

URL: http://hdl.handle.net/10012/3235

► The purpose of the present research was threefold: 1) to investigate whether natural aging affects the movements to remembered targets when participants make reaching movements… (more)

▼ The purpose of the present research was threefold: 1) to investigate whether natural aging affects the movements to remembered targets when participants make reaching movements under closed-loop feedback conditions, 2) to determine if experience with visually-guided movements facilitates memory-guided reaching and 3) to determine if age affects this facilitation. Two groups of 10 participants (healthy older and healthy younger) performed a manual aiming task with a mouse on a graphics tablet. A target appeared in one of 6 possible locations on a computer screen and participants had to make aiming movements with a visible cursor in 3 different visual conditions: full vision, immediate recall and delayed recall. In the full vision condition vision of the target was available throughout the movement. In the delay conditions the target disappeared either at the initiation of the aiming movement (immediate recall) or 2 seconds before movement onset (delayed recall). Vision of the hand (cursor) was available in all conditions. Each memory condition was divided into 2 blocks; block 1 was presented before the full vision condition and block 2 was presented after. Endpoint accuracy and variability were measured along with movement kinematics. Results showed no age differences in the kinematics in the full vision condition. For memory dependent pointing age also did not affect the movement kinematics or endpoint accuracy. Movements to remembered targets were significantly more variable in the delay recall compared to the immediate recall condition. A Block by Condition effect showed that the delay effect was present in the first block, but not in the second block, suggesting that variability did not increase with memory delay once participants had experience from full vision reaching. A Group by Condition effect showed the older adults were more variable than younger, although this difference was smaller in the delay condition due to the increase in variability as a function of delay seen in younger but not older adults. These findings suggest that aging does not affect how movements are controlled whether pointing to visible or remembered targets. They also suggest that aging does not affect the accuracy in pointing to remembered targets. Aging does affect the variability of these pointing movements. Finally, experience in pointing at targets with full vision modulates the increase in variability of pointing as a function of delay.

Subjects/Keywords: visuomotor control; visuospatial memory

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Skakum, A. (2007). Effects of Age and Experience on Memory-Guided Movements. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/3235

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Skakum, Amanda. “Effects of Age and Experience on Memory-Guided Movements.” 2007. Thesis, University of Waterloo. Accessed March 07, 2021. http://hdl.handle.net/10012/3235.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Skakum, Amanda. “Effects of Age and Experience on Memory-Guided Movements.” 2007. Web. 07 Mar 2021.

Vancouver:

Skakum A. Effects of Age and Experience on Memory-Guided Movements. [Internet] [Thesis]. University of Waterloo; 2007. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10012/3235.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Skakum A. Effects of Age and Experience on Memory-Guided Movements. [Thesis]. University of Waterloo; 2007. Available from: http://hdl.handle.net/10012/3235

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas Tech University

13. -8595-3745. Speed Differences during Two-Handed Tasks: Bimanual versus Intermanual Coordination and the Effect of Practice.

Degree: PhD, Psychology - Experimental, 2018, Texas Tech University

URL: http://hdl.handle.net/2346/82089

► Prior research has shown that some two-handed tasks are completed faster when using the dyadic, intermanual coordination mode (two people each using one hand to… (more)

▼ Prior research has shown that some two-handed tasks are completed faster when using the dyadic, intermanual coordination mode (two people each using one hand to complete a two-handed task) compared to the normal, bimanual coordination mode (one person using two-hands). However, this so-called “intermanual speed advantage” has been found to disappear after bimanual practice. Research suggests that these performance differences may depend on fundamental characteristics of each coordination mode that facilitate or impede speed during two-handed tasks. To investigate underlying human factors that affect speed, a task was constructed to exploit ostensible bimanual limitations: between-hand coupling and visuomotor coupling. Additionally, it was hypothesized that speed during two-handed tasks is associated with simultaneous, goal-directed movements (SGDMs) of the limbs, and that the bimanual limitations restrict the ability to make these movements during unpracticed task performance. It was further hypothesized that the intermanual speed advantage would disappear following bimanual practice. Indeed, the intermanual speed advantage found in prior literature was replicated during an unpracticed task and was not present following bimanual practice. Results suggest that the explanatory measures (between-hand coupling, visuomotor coupling, and SGDMs) provide a simple explanation of speed during two-handed tasks as compared to previously offered explanations based on shared task knowledge. Furthermore, previous bimanual practice increased performance (as evidenced by speed and results for most of the explanatory measures), which was consistent with hypotheses. The findings have implications for theories of motor control and applications that require individual and cooperative manual coordination, such as teleoperation and laparoscopy. Advisors/Committee Members: DeLucia, Patricia R (advisor), Gorman, Jamie C (committee member), Jones, Keith S (committee member), Klein, Tina (committee member), Patterson, Patrick (committee member).

Subjects/Keywords: Bimanual; intermanual; coordination; coupling; visuomotor; anticipatory; two-handed; recurrence.

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APA (6^th Edition):

-8595-3745. (2018). Speed Differences during Two-Handed Tasks: Bimanual versus Intermanual Coordination and the Effect of Practice. (Doctoral Dissertation). Texas Tech University. Retrieved from http://hdl.handle.net/2346/82089

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-8595-3745. “Speed Differences during Two-Handed Tasks: Bimanual versus Intermanual Coordination and the Effect of Practice.” 2018. Doctoral Dissertation, Texas Tech University. Accessed March 07, 2021. http://hdl.handle.net/2346/82089.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-8595-3745. “Speed Differences during Two-Handed Tasks: Bimanual versus Intermanual Coordination and the Effect of Practice.” 2018. Web. 07 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-8595-3745. Speed Differences during Two-Handed Tasks: Bimanual versus Intermanual Coordination and the Effect of Practice. [Internet] [Doctoral dissertation]. Texas Tech University; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/2346/82089.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-8595-3745. Speed Differences during Two-Handed Tasks: Bimanual versus Intermanual Coordination and the Effect of Practice. [Doctoral Dissertation]. Texas Tech University; 2018. Available from: http://hdl.handle.net/2346/82089

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Illinois – Chicago

14. Poon, Cynthia. Spatiotemporal Dynamics of Vision on Force Control.

Degree: 2012, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/8660

► The spatiotemporal pattern of brain activity during force control in healthy individuals using high-density electroencephalography (EEG) was examined. The first study examined the immediate transition… (more)

Subjects/Keywords: Electroencephalography: event-related potentials; visuomotor; low-resolution brain electromagnetic tomography

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APA (6^th Edition):

Poon, C. (2012). Spatiotemporal Dynamics of Vision on Force Control. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/8660

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Poon, Cynthia. “Spatiotemporal Dynamics of Vision on Force Control.” 2012. Thesis, University of Illinois – Chicago. Accessed March 07, 2021. http://hdl.handle.net/10027/8660.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Poon, Cynthia. “Spatiotemporal Dynamics of Vision on Force Control.” 2012. Web. 07 Mar 2021.

Vancouver:

Poon C. Spatiotemporal Dynamics of Vision on Force Control. [Internet] [Thesis]. University of Illinois – Chicago; 2012. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10027/8660.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Poon C. Spatiotemporal Dynamics of Vision on Force Control. [Thesis]. University of Illinois – Chicago; 2012. Available from: http://hdl.handle.net/10027/8660

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Exeter

15. Lee, Don Hyung. The role of the 'quiet eye' in golf putting.

Degree: PhD, 2015, University of Exeter

URL: http://hdl.handle.net/10871/17707

► It has been consistently shown in the literature that when gaze is directed to a specific location, for a long enough duration, at the correct… (more)

▼ It has been consistently shown in the literature that when gaze is directed to a specific location, for a long enough duration, at the correct time relative to the motor execution, high-levels of performance are possible. In recent years, a particular gaze called quiet eye (QE) has gained growing attention among researchers investigating aiming tasks and has become accepted within the literature as a measure of optimal attentional control. Previous studies consistently displayed that longer QE is associated with superior performance however there is lack of understanding how QE exerts its positive effect on performance. Therefore the overriding aim of the current program of research was to explore the mechanisms behind the QE by experimentally manipulating the separate aspects of the QE definition in ways that have not been explored by previous researchers. In study 1 (Chapter 2), two experiments were conducted to examine the key characteristics of the QE in golf putting; duration and location. Novice participants were randomly allocated to training groups of experimentally longer or shorter QE durations (experiment 1) and training groups of different QE locations (experiment 2). A retention-pressure-retention design was adopted, and measures of performance and QE were recorded. All groups improved performance after training and the levels of performance achieved were robust in a pressure test. However there were no significant group effects. Study 1 provided partial support for the efficacy of QE training, but did not clarify how the QE itself underpins the performance advantage revealed in earlier studies and suggested that the QE should perhaps not be reported simply as a function of its duration or its location. In study 2 (Chapter 3) an examination of the timing of the QE was performed, using an occlusion paradigm. This provided an experimental manipulation of the availability of visual information during the putting action. Expert participants performed a putting task under three different conditions, namely full, early, and late vision conditions. The results showed that putting accuracy was the poorest when late visual information was occluded (early vision condition). Therefore study 2 suggested that the correct temporal placement of gaze might be more crucial to successful performance, and that putting accuracy was poorer when the latter component of QE which ensures precise control of movement was occluded. Previous research has revealed that anxiety can attenuate the QE duration, shortening the latter component which was shown to be important in study 2. Therefore the final study in the thesis examined the influence of anxiety on attentional control (QE). Expert golfers participated in a putting shootout competition designed to increase levels of anxiety and continued putting until a missed putt occurred. The results revealed that duration of QE was shorter on the missed putt, while there was no difference in QE duration for successful putts (first and penultimate putts). The results are therefore…

Subjects/Keywords: 612.8; quiet eye; visuomotor control; golf putting; visual attention; anxiety; attention

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lee, D. H. (2015). The role of the 'quiet eye' in golf putting. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/17707

Chicago Manual of Style (16^th Edition):

Lee, Don Hyung. “The role of the 'quiet eye' in golf putting.” 2015. Doctoral Dissertation, University of Exeter. Accessed March 07, 2021. http://hdl.handle.net/10871/17707.

MLA Handbook (7^th Edition):

Lee, Don Hyung. “The role of the 'quiet eye' in golf putting.” 2015. Web. 07 Mar 2021.

Vancouver:

Lee DH. The role of the 'quiet eye' in golf putting. [Internet] [Doctoral dissertation]. University of Exeter; 2015. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10871/17707.

Council of Science Editors:

Lee DH. The role of the 'quiet eye' in golf putting. [Doctoral Dissertation]. University of Exeter; 2015. Available from: http://hdl.handle.net/10871/17707

University of Glasgow

16. Weir, Clifford Ronald. The role of extraocular muscle afferent signals in oculomotor control and spatial localisation.

Degree: Thesis (M.D.), 2001, University of Glasgow

URL: http://theses.gla.ac.uk/75743/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390774

► The extraocular muscles are richly endowed with sensory receptors. However, the precise role of afferent signals derived from these proprioceptors in visuomotor control is not… (more)

▼ The extraocular muscles are richly endowed with sensory receptors. However, the precise role of afferent signals derived from these proprioceptors in visuomotor control is not fully understood, and has been the subject of considerable debate for more than a century. This has been investigated in more detail in these studies. Part 1 of this thesis provides a review of previously published work concerning both the existence and the function of extraocular muscle afferent signals in oculomotor control and spatial localisation. Part 2 of this thesis investigates oculomotor control. This was done by using an infrared corneal reflection device to record eye movements under different experimental conditions. Initially, an assessment of the reproducibility of this technique was performed in a population of normal adults. This confirmed that it was an accurate method for the repeated measurement of eye movements. The effect of experimentally impeding the movement of one eye, using a suction contact lens, on both saccades and smooth pursuit eye movements of the contralateral eye was then investigated. This technique is thought to modify non-visual afferent signals from the impeded eye, most likely to be derived from extraocular muscle proprioceptors. The results showed that for saccadic eye movements, the amplitude and peak velocity of the contralateral eye was reduced when one eye was impeded. However, the main sequence parameters remained unchanged. For smooth pursuit eye movements, the initial acceleration and velocity of the contralateral eye were reduced when one eye was impeded. These findings indicate that extraocular muscle afferent signals can under certain circumstances, influence the oculomotor control of both the saccadic and smooth pursuit systems. Part 3 of this thesis investigates spatial localisation. This was appraised by asking subjects to point at targets appearing on a computer touchscreen without being able to see the pointing hand. Initially an assessment of the reproducibility of this technique was performed in a population of normal children and adults to ensure that it was an accurate method for this purpose. Spatial localisation was then assessed in a group of 60 children with one particular type of strabismus, namely fully accommodative esotropia. A comparison was made of their pointing responses when their eyes are aligned (when wearing glasses) and when there is a manifest squint (not wearing glasses). The results showed that their perception of the central target position shifted in the direction of the non-squinting eye when their deviations are manifest. These findings are thought to be due to an alteration in extraretinal eye position information, derived in part, from extraocular muscle afferent signals, which helps to specify visual direction. A further study investigated the pointing responses of two groups of patients undergoing different forms of surgery for primary rhegmatogenous retinal detachment. The results showed that those patients undergoing conventional external scleral buckling…

Subjects/Keywords: 610; Visuomotor vision; Eye movement

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Weir, C. R. (2001). The role of extraocular muscle afferent signals in oculomotor control and spatial localisation. (Doctoral Dissertation). University of Glasgow. Retrieved from http://theses.gla.ac.uk/75743/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390774

Chicago Manual of Style (16^th Edition):

Weir, Clifford Ronald. “The role of extraocular muscle afferent signals in oculomotor control and spatial localisation.” 2001. Doctoral Dissertation, University of Glasgow. Accessed March 07, 2021. http://theses.gla.ac.uk/75743/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390774.

MLA Handbook (7^th Edition):

Weir, Clifford Ronald. “The role of extraocular muscle afferent signals in oculomotor control and spatial localisation.” 2001. Web. 07 Mar 2021.

Vancouver:

Weir CR. The role of extraocular muscle afferent signals in oculomotor control and spatial localisation. [Internet] [Doctoral dissertation]. University of Glasgow; 2001. [cited 2021 Mar 07]. Available from: http://theses.gla.ac.uk/75743/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390774.

Council of Science Editors:

Weir CR. The role of extraocular muscle afferent signals in oculomotor control and spatial localisation. [Doctoral Dissertation]. University of Glasgow; 2001. Available from: http://theses.gla.ac.uk/75743/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390774

Delft University of Technology

17. van der Vliet, Rick (author). Movement state noise and output noise relate to visuomotor adaptation rate in an optimal way.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:aa328662-e333-4f24-9858-c6ad00aec6e6

► Human movement relies on noisy processes in neurons, muscle cells and sensory cells. Therefore, movements are variable and can never be exactly reproduced. The nervous… (more)

▼ Human movement relies on noisy processes in neurons, muscle cells and sensory cells. Therefore, movements are variable and can never be exactly reproduced. The nervous system seems to exploit this movement noise for motor learning and specifically motor adaptation. However, a positive relation between movement noise and motor adaptation has not been consistently found in motor adaptation literature. Possibly, noise is comprised of distinct processes which contribute to motor adaptation in different ways. In Kalman filter theory, motor adaptation rate is calculated optimally from state noise and output noise, with state noise and adaptation rate positively correlated and output noise and adaptation rate negatively correlated. Therefore, if people learn (close) optimally from error, we would expect a similar relation. To investigate the relation between state noise, output noise and adaptation rate, we performed a visuomotor reaching adaptation experiment with a baseline and a perturbation block in 69 subjects. State noise, output noise and adaptation rate in the baseline and perturbation block were extracting using Bayesian fitting of a trial-to-trial state-space model. We found that adaptation rate in the perturbation block correlates positively with baseline state noise (r=0.27; 95%HDI=[0.05 0.50]) and negatively with baseline output noise (r= 0.41; 95%HDI=[ 0.63 0.16]). In addition, the steady-state Kalman gain calculated from baseline state and output noise correlated positively with adaptation rate in the perturbation block (r = 0.31; 95%HDI = [0.09 0.54]). Therefore, noise can be viewed both as a supporting factor for motor adaptation (state noise) and as a noise factor hampering optimal performance (output noise), and in order to understand the relationship of noise to learning, one must decompose noise into its constituent components. Advisors/Committee Members: Schouten, Alfred (mentor), Mugge, Winfred (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Motor learning; noise; genetics; visuomotor adaptation; motor planning; human

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APA (6^th Edition):

van der Vliet, R. (. (2017). Movement state noise and output noise relate to visuomotor adaptation rate in an optimal way. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:aa328662-e333-4f24-9858-c6ad00aec6e6

Chicago Manual of Style (16^th Edition):

van der Vliet, Rick (author). “Movement state noise and output noise relate to visuomotor adaptation rate in an optimal way.” 2017. Masters Thesis, Delft University of Technology. Accessed March 07, 2021. http://resolver.tudelft.nl/uuid:aa328662-e333-4f24-9858-c6ad00aec6e6.

MLA Handbook (7^th Edition):

van der Vliet, Rick (author). “Movement state noise and output noise relate to visuomotor adaptation rate in an optimal way.” 2017. Web. 07 Mar 2021.

Vancouver:

van der Vliet R(. Movement state noise and output noise relate to visuomotor adaptation rate in an optimal way. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 07]. Available from: http://resolver.tudelft.nl/uuid:aa328662-e333-4f24-9858-c6ad00aec6e6.

Council of Science Editors:

van der Vliet R(. Movement state noise and output noise relate to visuomotor adaptation rate in an optimal way. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:aa328662-e333-4f24-9858-c6ad00aec6e6

Washington University in St. Louis

18. Semrau, Jennifer. Using visual feedback to guide movement: Properties of adaptation in changing environments and Parkinson's disease.

Degree: PhD, Biology and Biomedical Sciences: Neurosciences, 2011, Washington University in St. Louis

URL: https://openscholarship.wustl.edu/etd/641

► On a day-to-day basis we use visual information to guide the execution of our movements with great ease. The use of vision allows us to… (more)

▼ On a day-to-day basis we use visual information to guide the execution of our movements with great ease. The use of vision allows us to guide and modify our movements by appropriately transforming external sensory information into proper motor commands. Current literature characterizes the process of visuomotor adaptation, but fails to consider the incremental response to sensed errors that comprise a fully adaptive process. We aimed to understand the properties of the trial-by-trial transformation of sensed visual error into subsequent motor adaptation. In this thesis we further aimed to understand how visuomotor learning changes as a function of experienced environment and how it is impacted by Parkinson's disease. Recent experiments in force learning have shown that adaptive strategies can be flexibly and readily modified according to the demands of the environment a person experiences. In Chapter 2, we investigated the properties of visual feedback strategies in response to environments that changed daily. We introduced visual environments that could change as a function of the likelihood of experiencing a visual perturbation, or the direction of the visual perturbation bias across the workspace. By testing subjects in environments with changing statistics across several days, we were able to observe changes in the visuomotor sensitivity across environments. We found that subjects experiencing changes in visual likelihood adopted strategies very similar to those seen in force field learning. However, unlike in haptic learning, we discovered that when subjects experienced different environmental biases, adaptive sensitivity could be effected both within a single training day as well as across training days. In Chapter 3, we investigated the properties of visuomotor adaptation in patients with Parkinson's disease. Previous experiments have suggested that patients with Parkinson's disease have impoverished visuomotor learning when compared to healthy age-matched controls. We tested two aspects of visuomotor adaptation to determine the contribution of visual feedback in Parkinson's disease: visual extent - thought to be mediated by the basal ganglia, and visual direction - thought to be cortically mediated. We found that patients with Parkinson's disease fully adapted to changes in visual direction and showed more complete adaptation compared to control subjects, but adaptation in Parkinson's disease patients was impaired during changes of visual extent. Our results confirm the idea that basal ganglia deficits can alter aspects of visuomotor adaptation. However, we have shown that part of this adaptive process remains intact, in accordance with hypotheses that state visuomotor control of direction and extent are separable processes. Advisors/Committee Members: Kurt Thorougman.

Subjects/Keywords: Neurosciences; Motor adaptation; Parkinson's disease; Reaching; Visuomotor control

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Semrau, J. (2011). Using visual feedback to guide movement: Properties of adaptation in changing environments and Parkinson's disease. (Doctoral Dissertation). Washington University in St. Louis. Retrieved from https://openscholarship.wustl.edu/etd/641

Chicago Manual of Style (16^th Edition):

Semrau, Jennifer. “Using visual feedback to guide movement: Properties of adaptation in changing environments and Parkinson's disease.” 2011. Doctoral Dissertation, Washington University in St. Louis. Accessed March 07, 2021. https://openscholarship.wustl.edu/etd/641.

MLA Handbook (7^th Edition):

Semrau, Jennifer. “Using visual feedback to guide movement: Properties of adaptation in changing environments and Parkinson's disease.” 2011. Web. 07 Mar 2021.

Vancouver:

Semrau J. Using visual feedback to guide movement: Properties of adaptation in changing environments and Parkinson's disease. [Internet] [Doctoral dissertation]. Washington University in St. Louis; 2011. [cited 2021 Mar 07]. Available from: https://openscholarship.wustl.edu/etd/641.

Council of Science Editors:

Semrau J. Using visual feedback to guide movement: Properties of adaptation in changing environments and Parkinson's disease. [Doctoral Dissertation]. Washington University in St. Louis; 2011. Available from: https://openscholarship.wustl.edu/etd/641

19. Alhabib, Fatemeh. Competition Between Veridical and Perceived Location for Visuomotor Control.

Degree: MA, Psychology, 2019, City University of New York

URL: https://academicworks.cuny.edu/cc_etds_theses/799

► An influential proposal holds that our visual systems use different information for perception and action. Though numerous studies utilized visual illusions, in which veridical… (more)

Subjects/Keywords: Flash-lag illusion; Priming; Visuomotor Control; Cognition and Perception

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APA (6^th Edition):

Alhabib, F. (2019). Competition Between Veridical and Perceived Location for Visuomotor Control. (Masters Thesis). City University of New York. Retrieved from https://academicworks.cuny.edu/cc_etds_theses/799

Chicago Manual of Style (16^th Edition):

Alhabib, Fatemeh. “Competition Between Veridical and Perceived Location for Visuomotor Control.” 2019. Masters Thesis, City University of New York. Accessed March 07, 2021. https://academicworks.cuny.edu/cc_etds_theses/799.

MLA Handbook (7^th Edition):

Alhabib, Fatemeh. “Competition Between Veridical and Perceived Location for Visuomotor Control.” 2019. Web. 07 Mar 2021.

Vancouver:

Alhabib F. Competition Between Veridical and Perceived Location for Visuomotor Control. [Internet] [Masters thesis]. City University of New York; 2019. [cited 2021 Mar 07]. Available from: https://academicworks.cuny.edu/cc_etds_theses/799.

Council of Science Editors:

Alhabib F. Competition Between Veridical and Perceived Location for Visuomotor Control. [Masters Thesis]. City University of New York; 2019. Available from: https://academicworks.cuny.edu/cc_etds_theses/799

Louisiana State University

20. Yeomans, Matthew Alan. Eye-Hand Coordination Varies According to Changes in Cognitive-Motor Load and Eye Movements Used.

Degree: PhD, Biomechanics, 2020, Louisiana State University

URL: https://digitalcommons.lsu.edu/gradschool_dissertations/5313

► In this dissertation three studies were used to help improve the understanding of eye- hand coordination control of visuomotor reaching tasks with varying cognitive… (more)

▼ In this dissertation three studies were used to help improve the understanding of eye- hand coordination control of visuomotor reaching tasks with varying cognitive loads. Specifically, we considered potential performance differences based on eye-movements, postural influences, as well as fitness level of the young adult participants. A brief introduction in chapter 1 is followed by a detailed literature review in chapter 2. Results from the three studies presented in chapter’s 3-5 further advance our knowledge of the integrated control used for goal-directed visually-guided reaches. In the first study (chapter 3), the additional cost associated with the use of smooth pursuit slowed hand movement speed when the eyes and hand moved in distinct directions, yet improved accuracy over the use of saccadic eye movements and eye fixation. We concluded that eye-movement choice can influence various types of visually-guided reaching with different cognitive demands and that researchers should provide clear eye-movement instructions for participants and/or monitor the eyes when assessing similar upper limb control to account for possible differences. In the second study (chapter 4), results revealed slower speed and poor accuracy of hand movements along with less body sway for visually-guided reaching when the eyes and hand moved in opposite directions during eye-hand decoupling compared to when the eyes and hand moved in the same direction (eye-hand coupling). In contrast, standing up did not significantly influence reaching performance compared to sitting. We concluded that increases in cognitive demands for eye-hand coordination created a greater need for postural control to help improve the goal- directed control of reaching. In the third study (chapter 5), we found no evidence of eye-hand coordination differences between highly fit or sedentary participants, yet cerebral activation in the centro-parietal location differed between tasks involving eye-hand coupling/decoupling. We concluded that reaching performance declines accompanied increased sensorimotor demands during eye-hand decoupling that may link to prior/current athletic experience and not fitness level. Overall, alterations in visually-guided goal-directed reaching movements involving eye-hand coupling and decoupling depend on changes in eye-movements utilized and not on low threat postural changes or fitness levels of the young adults performing the task.

Subjects/Keywords: Cognitive-motor integration; Eye tracking; Kinematics; Visuomotor control; Center of pressure

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APA (6^th Edition):

Yeomans, M. A. (2020). Eye-Hand Coordination Varies According to Changes in Cognitive-Motor Load and Eye Movements Used. (Doctoral Dissertation). Louisiana State University. Retrieved from https://digitalcommons.lsu.edu/gradschool_dissertations/5313

Chicago Manual of Style (16^th Edition):

Yeomans, Matthew Alan. “Eye-Hand Coordination Varies According to Changes in Cognitive-Motor Load and Eye Movements Used.” 2020. Doctoral Dissertation, Louisiana State University. Accessed March 07, 2021. https://digitalcommons.lsu.edu/gradschool_dissertations/5313.

MLA Handbook (7^th Edition):

Yeomans, Matthew Alan. “Eye-Hand Coordination Varies According to Changes in Cognitive-Motor Load and Eye Movements Used.” 2020. Web. 07 Mar 2021.

Vancouver:

Yeomans MA. Eye-Hand Coordination Varies According to Changes in Cognitive-Motor Load and Eye Movements Used. [Internet] [Doctoral dissertation]. Louisiana State University; 2020. [cited 2021 Mar 07]. Available from: https://digitalcommons.lsu.edu/gradschool_dissertations/5313.

Council of Science Editors:

Yeomans MA. Eye-Hand Coordination Varies According to Changes in Cognitive-Motor Load and Eye Movements Used. [Doctoral Dissertation]. Louisiana State University; 2020. Available from: https://digitalcommons.lsu.edu/gradschool_dissertations/5313

University of Ottawa

21. Heirani Moghaddam, Sarvenaz. Assessing and Defining Explicit Processes in Visuomotor Adaptation.

Degree: MSc, Sciences de la santé / Health Sciences, 2020, University of Ottawa

URL: http://dx.doi.org/10.20381/ruor-25323

► The Process Dissociation Procedure (PDP) and Verbal Report Framework (VRF) have demonstrated that both explicit (Explicit Adaptation, EA) and implicit processes (Implicit Adaptation, IA) contribute… (more)

▼ The Process Dissociation Procedure (PDP) and Verbal Report Framework (VRF) have demonstrated that both explicit (Explicit Adaptation, EA) and implicit processes (Implicit Adaptation, IA) contribute to visuomotor adaptation. However, the definition of EA is inconsistent across the two paradigms, such that the PDP refers to EA as reflecting one’s knowledge regarding how they have to reach in the novel visuomotor environment, while the VRF refers to EA as reflecting pre-planned aiming strategies. The objective of the current experiment was to compare EA as assessed via the PDP and VRF and hence provide insight into if they are assessing similar explicit processes. Sixty-one participants were evenly divided into three groups (PDP, VRF and VRF-No Cursor) and trained to reach in a virtual environment with an aligned cursor (1 block of 45 trials) and then a cursor rotated 40° clockwise (CW) relative to hand motion (3 blocks of 45 trials). EA and IA were assessed immediately following each block of rotated reach training trials, and again 5-minutes later. In the assessment trials, the PDP group reached while using any learned strategy (EA+IA), or while not engaging in a strategy (IA) and the VRF group reported their planned aiming direction by picking a number from an array of numbers surrounding the target (EA), before reaching to the target (EA+IA) with visual feedback. The VRF-No Cursor group completed the same assessment trials as the VRF group, but no visual feedback was presented during assessment of EA and IA. Following this, participants completed a post-experiment questionnaire and a drawing task to assess their awareness of the visuomotor rotation and changes in their reaches respectively. We found that all groups adapted their reaches to the 40° CW cursor rotation. As well, averaged across participants, the magnitude and retention of EA and IA were similar between the PDP and VRF groups. However, the magnitude of EA established via the VRF was not related to participants’ post-experiment awareness of the visuomotor distortion and how they had changed their reaches, as observed in the PDP and VRF No-Cursor groups. Together, these results indicate that, while the PDP and VRF suggest similar contributions of EA and IA to visuomotor adaptation, the methods of assessment engage different explicit processes. EA assessed within the VRF does not reflect one’s awareness of the visuomotor distortion at the end of the experiment or how they changed their reaches. Advisors/Committee Members: Cressman, Erin (supervisor).

Subjects/Keywords: Visuomotor Adaptation; Process Dissociation Procedure; Verbal Report Framework; Explicit; Implicit

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APA (6^th Edition):

Heirani Moghaddam, S. (2020). Assessing and Defining Explicit Processes in Visuomotor Adaptation. (Masters Thesis). University of Ottawa. Retrieved from http://dx.doi.org/10.20381/ruor-25323

Chicago Manual of Style (16^th Edition):

Heirani Moghaddam, Sarvenaz. “Assessing and Defining Explicit Processes in Visuomotor Adaptation.” 2020. Masters Thesis, University of Ottawa. Accessed March 07, 2021. http://dx.doi.org/10.20381/ruor-25323.

MLA Handbook (7^th Edition):

Heirani Moghaddam, Sarvenaz. “Assessing and Defining Explicit Processes in Visuomotor Adaptation.” 2020. Web. 07 Mar 2021.

Vancouver:

Heirani Moghaddam S. Assessing and Defining Explicit Processes in Visuomotor Adaptation. [Internet] [Masters thesis]. University of Ottawa; 2020. [cited 2021 Mar 07]. Available from: http://dx.doi.org/10.20381/ruor-25323.

Council of Science Editors:

Heirani Moghaddam S. Assessing and Defining Explicit Processes in Visuomotor Adaptation. [Masters Thesis]. University of Ottawa; 2020. Available from: http://dx.doi.org/10.20381/ruor-25323

York University

22. Ruttle, Jennifer Elizabeth. The Contribution of Cross-Sensory Error Signals to Reach Aftereffects and Proprioceptive Recalibration.

Degree: MA -MA, Psychology(Functional Area: Brain, Behaviour & Cognitive Sciences, 2018, York University

URL: http://hdl.handle.net/10315/34299

► Reaching with altered visual feedback leads to adaptation of internal motor plans, which result in aftereffects, deviated reaching without visual feedback and proprioceptive recalibration, a… (more)

▼ Reaching with altered visual feedback leads to adaptation of internal motor plans, which result in aftereffects, deviated reaching without visual feedback and proprioceptive recalibration, a shift in perceived hand location (Cressman & Henriques, 2010). Zbib, Henriques, and Cressman (2016) found motor changes arise more quickly than proprioceptive changes, which required prolonged training to become significantly shifted. But their methodology may not have captured the finer incremental changes in aftereffects and proprioception. Our lab also investigated the time course of these changes using a much quicker method of proprioceptive assessment. Results suggest that both motor and proprioceptive recalibration occurred in as few as 6 rotated-cursor training trials (7.6 and 3.9 respectively). Our current study focuses on the specific contribution of cross-sensory error signals on reach aftereffects and proprioceptive recalibration. Participants moved their hand to a remembered target while they were constrained to a force channel. The cursor always moved straight to the target site, while the hand was abruptly deviated 30 CCW of the intended target (making the cursor rotation CW as per the previous study). This passive training resulted in significant aftereffects and change in felt hand position within 6 training trials. Reach aftereffects were even larger by the end of passive-training (10.6), which were expectedly smaller than those produced during volitional reaches (15.7). In addition, all participants recalibrated their sense of felt hand position equally (11.3), which was larger than the shift seen with volitional reaching (5.09). The time course of these sensory and motor changes differed slightly across experiments but more across the different measures (motor vs. sensory). Our results suggest that proprioception is much more important for motor learning, with even the mere discrepancy between felt and seen hand location being enough to drive robust motor adaptation. Advisors/Committee Members: Henriques, Denise (advisor).

Subjects/Keywords: Experimental psychology; Motor Learning; Movement; Proprioception; Visuomotor Rotation; Reaching

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APA (6^th Edition):

Ruttle, J. E. (2018). The Contribution of Cross-Sensory Error Signals to Reach Aftereffects and Proprioceptive Recalibration. (Masters Thesis). York University. Retrieved from http://hdl.handle.net/10315/34299

Chicago Manual of Style (16^th Edition):

Ruttle, Jennifer Elizabeth. “The Contribution of Cross-Sensory Error Signals to Reach Aftereffects and Proprioceptive Recalibration.” 2018. Masters Thesis, York University. Accessed March 07, 2021. http://hdl.handle.net/10315/34299.

MLA Handbook (7^th Edition):

Ruttle, Jennifer Elizabeth. “The Contribution of Cross-Sensory Error Signals to Reach Aftereffects and Proprioceptive Recalibration.” 2018. Web. 07 Mar 2021.

Vancouver:

Ruttle JE. The Contribution of Cross-Sensory Error Signals to Reach Aftereffects and Proprioceptive Recalibration. [Internet] [Masters thesis]. York University; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10315/34299.

Council of Science Editors:

Ruttle JE. The Contribution of Cross-Sensory Error Signals to Reach Aftereffects and Proprioceptive Recalibration. [Masters Thesis]. York University; 2018. Available from: http://hdl.handle.net/10315/34299

York University

23. Cavaliere, Andrea Vincenzo. Assessing Cognitive-Motor Integration in Middle-Aged Athletes: The Effects of Dementia Risk & Concussion.

Degree: MSc -MS, Kinesiology & Health Science, 2018, York University

URL: http://hdl.handle.net/10315/35521

► We investigated the relationship between dementia risk and concussion history in a physically active, middle-aged adult population (between the ages of 30 and 65). These… (more)

Subjects/Keywords: Kinesiology; Motor control; Visuomotor integration; Neuropsychology; Ageing; Physical activity; Concussion; Dementia

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APA (6^th Edition):

Cavaliere, A. V. (2018). Assessing Cognitive-Motor Integration in Middle-Aged Athletes: The Effects of Dementia Risk & Concussion. (Masters Thesis). York University. Retrieved from http://hdl.handle.net/10315/35521

Chicago Manual of Style (16^th Edition):

Cavaliere, Andrea Vincenzo. “Assessing Cognitive-Motor Integration in Middle-Aged Athletes: The Effects of Dementia Risk & Concussion.” 2018. Masters Thesis, York University. Accessed March 07, 2021. http://hdl.handle.net/10315/35521.

MLA Handbook (7^th Edition):

Cavaliere, Andrea Vincenzo. “Assessing Cognitive-Motor Integration in Middle-Aged Athletes: The Effects of Dementia Risk & Concussion.” 2018. Web. 07 Mar 2021.

Vancouver:

Cavaliere AV. Assessing Cognitive-Motor Integration in Middle-Aged Athletes: The Effects of Dementia Risk & Concussion. [Internet] [Masters thesis]. York University; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10315/35521.

Council of Science Editors:

Cavaliere AV. Assessing Cognitive-Motor Integration in Middle-Aged Athletes: The Effects of Dementia Risk & Concussion. [Masters Thesis]. York University; 2018. Available from: http://hdl.handle.net/10315/35521

University of Toronto

24. Frost, Adam Larry. Transsaccadic Memory: Working Memory in Action.

Degree: PhD, 2020, University of Toronto

URL: http://hdl.handle.net/1807/103143

► Transsaccadic memory is the process by which visual information is maintained and spatially updated across eye movements. Transsaccadic memory resembles general visuospatial working memory in… (more)

▼ Transsaccadic memory is the process by which visual information is maintained and spatially updated across eye movements. Transsaccadic memory resembles general visuospatial working memory in many ways, but it is unclear whether the two functions do share common faculties, or if the transsaccadic functions are underpinned by specialized mechanisms given the unique demands of maintaining spatial constancy across eye movements. Six experiments are presented in this thesis to address this question. In Chapter 2, I found that transsaccadic memory performance is predicted by performance on a 2-Back task, demonstrating commonalities with general visuospatial working memory. I also found, however, that performance on a change detection task did not predict transsaccadic memory performance, indicating a dissociation between a well-established contemporary measure of visuospatial working memory and transsaccadic memory. Change detection performance also failed to predict performance on the 2-Back task, so in Chapter 3, four variants of the change detection task were created to test possible explanations for the dissociations. All change detection tasks correlated strongly with the standard change detection task, but a correlation with the 2-Back task was seen only with a change detection variant where the availability of contextual spatial information during the test phase was minimized. This version of the change detection task was then tested against the transsaccadic task in Chapter 4, along with 2-Back and a no-saccade baseline for the transsaccadic task to isolate saccade-related performance components. Doing so, two saccade-related components were found that predicted performance on the working memory measures, though only one of these components explained variance across all tasks. I conclude that transsaccadic memory does appear to share faculties with general visuospatial working memory, but that like visuospatial working memory itself, it is a multifaceted construct. Advisors/Committee Members: Frost, Adam L, Psychology.

Subjects/Keywords: Perception; Remapping; Saccades; Transsaccadic memory; Visual working memory; Visuomotor systems; 0317

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APA (6^th Edition):

Frost, A. L. (2020). Transsaccadic Memory: Working Memory in Action. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/103143

Chicago Manual of Style (16^th Edition):

Frost, Adam Larry. “Transsaccadic Memory: Working Memory in Action.” 2020. Doctoral Dissertation, University of Toronto. Accessed March 07, 2021. http://hdl.handle.net/1807/103143.

MLA Handbook (7^th Edition):

Frost, Adam Larry. “Transsaccadic Memory: Working Memory in Action.” 2020. Web. 07 Mar 2021.

Vancouver:

Frost AL. Transsaccadic Memory: Working Memory in Action. [Internet] [Doctoral dissertation]. University of Toronto; 2020. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1807/103143.

Council of Science Editors:

Frost AL. Transsaccadic Memory: Working Memory in Action. [Doctoral Dissertation]. University of Toronto; 2020. Available from: http://hdl.handle.net/1807/103143

University of Toronto

25. Guo, Lin Lawrence. The Temporal Structure of Neural Processes Underlying Human Precision Grasp Computations.

Degree: PhD, 2020, University of Toronto

URL: http://hdl.handle.net/1807/103515

► Object grasping is fundamental to our interaction with the environment. To plan a grasp, the brain relies on lateral and medial pathways within a parieto-frontal… (more)

▼ Object grasping is fundamental to our interaction with the environment. To plan a grasp, the brain relies on lateral and medial pathways within a parieto-frontal network that convert grasp-relevant object features into motor plans to guide hand movements. While much is known about their cortical loci, little is known about when representations of visual and visuomotor features emerge and how they unfold over time. Characterizing the temporal dynamics of these representations is crucial in order to provide a complete functional description of the grasp network and to elucidate the computational steps during grasp planning. The objective of this dissertation was to examine the temporal structure of neural processes underlying grasp planning and execution. To this end three studies were conducted in which electroencephalography (EEG) was recorded while participants planned and executed precision grasps upon viewing 3D objects. Time-resolved multivariate pattern analyses were employed to infer visual and visuomotor representations from the data. I demonstrate that grasp-relevant visual and visuomotor computations follow similar time courses but display different properties and dynamics. Further, grasp planning follows a monotonic progression from visual to motor representations but a partially non-monotonic progression from higher to lower level processes. Finally, visuomotor representations of grip size (implied by object size) and orientation progress differently over time but are similarly integrated into the grasp program. The latter is driven by overlapping neural processes that control left-handed and bimanual grasps and occur at an intermediate level of grasp control (i.e., upstream from the control of effectors but downstream from effector-independent goal representations). These results provide novel insights into the visual-to-motor transformations and hierarchical structure underlying the control of human precision grasps. Further, they highlight the need for temporally highly resolved methods like EEG or MEG to attain a comprehensive understanding of human grasp control. Advisors/Committee Members: Niemeier, Matthias, Psychology.

Subjects/Keywords: Decoding; EEG; Grasping; Multivariate Pattern Analysis (MVPA); Sensorimotor Control; Visuomotor; 0317

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Guo, L. L. (2020). The Temporal Structure of Neural Processes Underlying Human Precision Grasp Computations. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/103515

Chicago Manual of Style (16^th Edition):

Guo, Lin Lawrence. “The Temporal Structure of Neural Processes Underlying Human Precision Grasp Computations.” 2020. Doctoral Dissertation, University of Toronto. Accessed March 07, 2021. http://hdl.handle.net/1807/103515.

MLA Handbook (7^th Edition):

Guo, Lin Lawrence. “The Temporal Structure of Neural Processes Underlying Human Precision Grasp Computations.” 2020. Web. 07 Mar 2021.

Vancouver:

Guo LL. The Temporal Structure of Neural Processes Underlying Human Precision Grasp Computations. [Internet] [Doctoral dissertation]. University of Toronto; 2020. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1807/103515.

Council of Science Editors:

Guo LL. The Temporal Structure of Neural Processes Underlying Human Precision Grasp Computations. [Doctoral Dissertation]. University of Toronto; 2020. Available from: http://hdl.handle.net/1807/103515

York University

26. Modchalingam, Shanaathanan. Effects of Cognitive Awareness via Explicit Instruction and a Large Perturbation on Hand Localization Following Motor Adaption.

Degree: MSc -MS, Kinesiology & Health Science, 2018, York University

URL: http://hdl.handle.net/10315/35533

► Explicit awareness of a task is often beneficial in improving performance. However, the effects of awareness of perturbations on the resulting sensory and motor changes… (more)

Subjects/Keywords: Behavioral sciences; Motor learning; Sensorimotor learning; Reach; Visuomotor; Adaptation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Modchalingam, S. (2018). Effects of Cognitive Awareness via Explicit Instruction and a Large Perturbation on Hand Localization Following Motor Adaption. (Masters Thesis). York University. Retrieved from http://hdl.handle.net/10315/35533

Chicago Manual of Style (16^th Edition):

Modchalingam, Shanaathanan. “Effects of Cognitive Awareness via Explicit Instruction and a Large Perturbation on Hand Localization Following Motor Adaption.” 2018. Masters Thesis, York University. Accessed March 07, 2021. http://hdl.handle.net/10315/35533.

MLA Handbook (7^th Edition):

Modchalingam, Shanaathanan. “Effects of Cognitive Awareness via Explicit Instruction and a Large Perturbation on Hand Localization Following Motor Adaption.” 2018. Web. 07 Mar 2021.

Vancouver:

Modchalingam S. Effects of Cognitive Awareness via Explicit Instruction and a Large Perturbation on Hand Localization Following Motor Adaption. [Internet] [Masters thesis]. York University; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10315/35533.

Council of Science Editors:

Modchalingam S. Effects of Cognitive Awareness via Explicit Instruction and a Large Perturbation on Hand Localization Following Motor Adaption. [Masters Thesis]. York University; 2018. Available from: http://hdl.handle.net/10315/35533

York University

27. Cappadocia, David Christopher. Cortical Mechanisms of Visual Target Memory and Movement Planning and Execution for Reaches and Saccades in Humans.

Degree: PhD, Kinesiology & Health Science, 2018, York University

URL: http://hdl.handle.net/10315/35016

► The cortical mechanisms for reach have been studied extensively, but directionally selective mechanisms for visuospatial target memory, movement planning, and movement execution have not been… (more)

▼ The cortical mechanisms for reach have been studied extensively, but directionally selective mechanisms for visuospatial target memory, movement planning, and movement execution have not been clearly differentiated in the human. It is also unclear how effector-specificity evolves in the human brain across these three phases for reaches and saccades. To study these phenomenon, an event-related fMRI design with three key phases was used to break apart a movement into target memory, movement planning and movement execution phases. In the first experimental chapter (chapter 2) directionally selective mechanisms were studied in a memory-guided reach task that informed the subject to perform a pro- or anti-reach after the target memory phase. Using the pro/anti instruction to differentiate visual and motor directional selectivity during planning, we found that one occipital area showed contralateral visual selectivity, whereas a broad constellation of left hemisphere occipital, parietal, and frontal areas showed contralateral movement selectivity. Temporal analysis of these areas through the entire memory-planning sequence revealed early visual selectivity in most areas, followed by movement selectivity in most areas, with all areas showing a stereotypical visuo-movement transition. Cross-correlation of these spatial parameters through time revealed separate spatiotemporally correlated modules for visual input, motor output, and visuo-movement transformations that spanned occipital, parietal, and frontal cortex. In the second experimental chapter (Chapter 3), effector-specific activation for reaches and saccades was studied using a similar design that informed subjects of the effector after the target memory phase. Our analysis revealed more medial (pIPS, mIPS, M1, and PMd) activity during both reach planning and execution, and more lateral (mIPS, AG, and FEF) activity only during saccade execution. These motor activations were bilateral, with a left (contralateral) preference for reach. Apart from right FEF, effector-specific contrasts comparing reach and saccade activation revealed significantly more parietofrontal activation for reaches than saccades during both planning and execution. Cross-correlation of reach, saccade, and reach-saccade activation through time revealed spatiotemporally correlated activation both within and across effectors in each hemisphere, but with higher correlations in the right hemisphere. Taken together, these results demonstrate highly distributed, coordinated occipital-parietal-frontal networks for both reach and saccade, with effector-specific activation. Advisors/Committee Members: Crawford, John Douglas (advisor).

Subjects/Keywords: Kinesiology; fMRI; Reaching; Saccades; Visual working memory; Visuomotor transformations

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APA (6^th Edition):

Cappadocia, D. C. (2018). Cortical Mechanisms of Visual Target Memory and Movement Planning and Execution for Reaches and Saccades in Humans. (Doctoral Dissertation). York University. Retrieved from http://hdl.handle.net/10315/35016

Chicago Manual of Style (16^th Edition):

Cappadocia, David Christopher. “Cortical Mechanisms of Visual Target Memory and Movement Planning and Execution for Reaches and Saccades in Humans.” 2018. Doctoral Dissertation, York University. Accessed March 07, 2021. http://hdl.handle.net/10315/35016.

MLA Handbook (7^th Edition):

Cappadocia, David Christopher. “Cortical Mechanisms of Visual Target Memory and Movement Planning and Execution for Reaches and Saccades in Humans.” 2018. Web. 07 Mar 2021.

Vancouver:

Cappadocia DC. Cortical Mechanisms of Visual Target Memory and Movement Planning and Execution for Reaches and Saccades in Humans. [Internet] [Doctoral dissertation]. York University; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10315/35016.

Council of Science Editors:

Cappadocia DC. Cortical Mechanisms of Visual Target Memory and Movement Planning and Execution for Reaches and Saccades in Humans. [Doctoral Dissertation]. York University; 2018. Available from: http://hdl.handle.net/10315/35016

York University

28. Bansal, Ambika Tara. The Effects of the Error-Sensitivity and Perturbation Schedules on the Slow and Fast Processes in Reach Adaptation.

Degree: MSc -MS, Kinesiology & Health Science, 2020, York University

URL: http://hdl.handle.net/10315/37998

► To study the processes involved in motor adaptation we examined the occurrence of a spontaneous rebound to investigate any behavioural differences between a perturbation that… (more)

Subjects/Keywords: Psychology; Visuomotor adaptation; Two-rate model; Motor learning; Virtual reality

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bansal, A. T. (2020). The Effects of the Error-Sensitivity and Perturbation Schedules on the Slow and Fast Processes in Reach Adaptation. (Masters Thesis). York University. Retrieved from http://hdl.handle.net/10315/37998

Chicago Manual of Style (16^th Edition):

Bansal, Ambika Tara. “The Effects of the Error-Sensitivity and Perturbation Schedules on the Slow and Fast Processes in Reach Adaptation.” 2020. Masters Thesis, York University. Accessed March 07, 2021. http://hdl.handle.net/10315/37998.

MLA Handbook (7^th Edition):

Bansal, Ambika Tara. “The Effects of the Error-Sensitivity and Perturbation Schedules on the Slow and Fast Processes in Reach Adaptation.” 2020. Web. 07 Mar 2021.

Vancouver:

Bansal AT. The Effects of the Error-Sensitivity and Perturbation Schedules on the Slow and Fast Processes in Reach Adaptation. [Internet] [Masters thesis]. York University; 2020. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10315/37998.

Council of Science Editors:

Bansal AT. The Effects of the Error-Sensitivity and Perturbation Schedules on the Slow and Fast Processes in Reach Adaptation. [Masters Thesis]. York University; 2020. Available from: http://hdl.handle.net/10315/37998

Université de Sherbrooke

29. Savoie, Félix-Antoine. Rôle du cortex pariétal dans le traitement des erreurs de prédiction sensorielles et impact d’incitatifs sur l’activité cérébrale pendant la préparation d’un mouvement.: Role of the parietal cortex in sensory prediction error processing and the impact of incentives on neural activity during movement preparation.

Degree: 2020, Université de Sherbrooke

URL: http://hdl.handle.net/11143/17019

► Abstract: In the past two decades, many neuroscientists have framed motor control as an optimal feedback control problem. In this framework, it is thought that… (more)

▼ Abstract: In the past two decades, many neuroscientists have framed motor control as an optimal feedback control problem. In this framework, it is thought that the brain aims to produce movements that maximize the probability of reaching the task goal and minimize motor costs. To do so, the brain must be able to adapt to novel sensorimotor relationships, as these cause errors that both jeopardize task success and necessitate costly corrective movements. In this light, the first goal of this thesis was to investigate whether the parietal cortex is involved in processing the errors thought to drive implicit adaptation to a novel sensorimotor relationship. To address this question, two projects were carried out. In the first project, electroencephalography (EEG) was recorded in 15 participants during a visuomotor perturbation task to identify the neural signature of implicit adaptation-driving errors. The results revealed strong parietal EEG responses to such errors, suggesting that the parietal cortex is involved their processing. In the second project, 28 participants received single-pulse transcranial magnetic stimulation (TMS) over the parietal cortex to try to establish a causal relationship between the EEG responses observed in the first project and the implicit motor output changes incurred by a visuomotor perturbation. In contrast to our hypothesis, single-pulse TMS had no detectable impact on the motor output changes incurred by the visuomotor perturbation, suggesting that the neural activity observed in the first project may not have been causally related to implicit adaptation per se. Overall, these results demonstrate that the parietal cortex is sensitive to the errors that drive implicit adaptation, although it may not contribute to implicit changes in motor output. Parietal responses to visuomotor perturbations may thus subtend some other aspect of performance improvement during adaptation, such as explicit adaptation, online control or proprioceptive recalibration. In any case, these results are a first step towards understanding how different brain areas contribute to performance improvement during adaptation. In theory, the brain should be willing to mobilize more sensorimotor resources to reach more valuable motor goals. Given this, the second goal of this thesis was to investigate how the added value of a monetary incentive influences neural activity during movement preparation. To do so, EEG was recorded as 23 participants undertook a monetary incentive delay task in which reward obtainment and/or punishment avoidance depended on the accuracy of a goal-directed reaching movement. During the delay period, strong beta frequency (13 – 30 Hz) spectral power modulations were observed over a broad parieto-frontal area in conditions with, vs. without incentives and these modulations correlated with movement times (i.e., vigor). Of note, although both positive and negative incentives gave rise to similar spectral beta power profiles late in the delay period, positive incentives modulated spectral beta power… Advisors/Committee Members: Bernier, Pierre-Michel (advisor), Whittingstall, Kevin (advisor).

Subjects/Keywords: Adaptation sensorimotrice; Rotation visuomotrice; Contrôle visuomoteur; Erreur de prédiction sensorielle; Électroencéphalographie; Incitatifs; Récompenses; Punitions; Sensorimotor adaptation; Visuomotor rotation; Visuomotor control; Sensory prediction error; Electroencephalography; Incentives; Rewards; Punishments

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Savoie, F. (2020). Rôle du cortex pariétal dans le traitement des erreurs de prédiction sensorielles et impact d’incitatifs sur l’activité cérébrale pendant la préparation d’un mouvement.: Role of the parietal cortex in sensory prediction error processing and the impact of incentives on neural activity during movement preparation. (Doctoral Dissertation). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/17019

Chicago Manual of Style (16^th Edition):

Savoie, Félix-Antoine. “Rôle du cortex pariétal dans le traitement des erreurs de prédiction sensorielles et impact d’incitatifs sur l’activité cérébrale pendant la préparation d’un mouvement.: Role of the parietal cortex in sensory prediction error processing and the impact of incentives on neural activity during movement preparation.” 2020. Doctoral Dissertation, Université de Sherbrooke. Accessed March 07, 2021. http://hdl.handle.net/11143/17019.

MLA Handbook (7^th Edition):

Savoie, Félix-Antoine. “Rôle du cortex pariétal dans le traitement des erreurs de prédiction sensorielles et impact d’incitatifs sur l’activité cérébrale pendant la préparation d’un mouvement.: Role of the parietal cortex in sensory prediction error processing and the impact of incentives on neural activity during movement preparation.” 2020. Web. 07 Mar 2021.

Vancouver:

Savoie F. Rôle du cortex pariétal dans le traitement des erreurs de prédiction sensorielles et impact d’incitatifs sur l’activité cérébrale pendant la préparation d’un mouvement.: Role of the parietal cortex in sensory prediction error processing and the impact of incentives on neural activity during movement preparation. [Internet] [Doctoral dissertation]. Université de Sherbrooke; 2020. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11143/17019.

Council of Science Editors:

Savoie F. Rôle du cortex pariétal dans le traitement des erreurs de prédiction sensorielles et impact d’incitatifs sur l’activité cérébrale pendant la préparation d’un mouvement.: Role of the parietal cortex in sensory prediction error processing and the impact of incentives on neural activity during movement preparation. [Doctoral Dissertation]. Université de Sherbrooke; 2020. Available from: http://hdl.handle.net/11143/17019

University of South Africa

30. De Kock, Frederick Gideon. The neuropsychological measure (EEG) of flow under conditions of peak performance .

Degree: 2014, University of South Africa

URL: http://hdl.handle.net/10500/14359

► Flow is a mental state characterised by a feeling of energised focus, complete involvement and success when fully immersed in an activity. The dimensions of… (more)

▼ Flow is a mental state characterised by a feeling of energised focus, complete involvement and success when fully immersed in an activity. The dimensions of and the conditions required for flow to occur have been explored in a broad spectrum of situational contexts. The close relationship between flow and peak performance sparked an interest in ways to induce flow. However, any process of flow induction requires a measure to trace the degree to which flow is in fact occurring. Self-reports of the flow experience are subjective and provide ad hoc information. Psycho-physiological measures, such as EEG, can provide objective and continuous indications of the degree to which flow is occurring. Unfortunately few studies have explored the relationships between psycho-physiological measures and flow. The present study was an attempt to determine the EEG correlates of flow under conditions of peak performance. Twenty participants were asked to perform a continuous visuomotor task 10 times. Time taken per task was used as an indicator of task performance. EEG recordings were done concurrently. Participants completed an Abbreviated Flow Questionnaire (AFQ) after each task and a Game Flow Inventory (GFI) after having finished all 10 tasks. On completion, performance times and associated flow scores were standardised where after the sample was segmented into a high flow - peak performance and a low flow - low performance level. Multi-variate analysis of variance (MANOVA) was conducted on the performance, flow and EEG data to establish that a significant difference existed between the two levels. In addition, a one-way analysis of variance between high and low flow data was conducted for all variables and main effects were established. Inter-correlations of all EEG data at both levels were then conducted across four brain sites (F3, C3, P3, O1). In high flow only, results indicated increased lobeta power in the sensorimotor cortex together with a unique EEG pattern showing beta band synchronisation between the prefrontal and sensori-motor areas and de-synchronisation between all other areas, while all other frequencies (delta, theta, alpha, lobeta, hibeta, and gamma) remained synchronised across all scalp locations. These findings supported a theoretical neuropsychological model of flow. Advisors/Committee Members: van Deventer, Vasi (advisor).

Subjects/Keywords: Psycho-physiological; Flow; Performance; Power; Synchrony; De-synchronisation; EEG correlates; EEG marker; Visuomotor task

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APA (6^th Edition):

De Kock, F. G. (2014). The neuropsychological measure (EEG) of flow under conditions of peak performance . (Doctoral Dissertation). University of South Africa. Retrieved from http://hdl.handle.net/10500/14359

Chicago Manual of Style (16^th Edition):

De Kock, Frederick Gideon. “The neuropsychological measure (EEG) of flow under conditions of peak performance .” 2014. Doctoral Dissertation, University of South Africa. Accessed March 07, 2021. http://hdl.handle.net/10500/14359.

MLA Handbook (7^th Edition):

De Kock, Frederick Gideon. “The neuropsychological measure (EEG) of flow under conditions of peak performance .” 2014. Web. 07 Mar 2021.

Vancouver:

De Kock FG. The neuropsychological measure (EEG) of flow under conditions of peak performance . [Internet] [Doctoral dissertation]. University of South Africa; 2014. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10500/14359.

Council of Science Editors:

De Kock FG. The neuropsychological measure (EEG) of flow under conditions of peak performance . [Doctoral Dissertation]. University of South Africa; 2014. Available from: http://hdl.handle.net/10500/14359

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