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You searched for +publisher:"Université Catholique de Louvain" +contributor:("McIntyre, Joseph"). Showing records 1 – 2 of 2 total matches.

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Université Catholique de Louvain

1. Crevecoeur, Frédéric. The gravitational forces as fundamental input for sensorimotor coordination.

Degree: 2010, Université Catholique de Louvain

Any motor action results from a complex combination of motor commands that control the muscular forces and produce the desired movement. For this purpose, the motor commands must continuously compensate for the action of external forces acting on the body, of which the omnipresent gravitational forces. As a consequence, an internal knowledge of the movement dynamics, including the effect of gravitational forces, is essential in order to achieve successful movements. Evidence for such internal representation can be found in existing studies, but the role that gravity plays in the internal models of dynamics remains a challenging problem. The present thesis uses an experimental and modeling approaches in order to better understand the role played by gravity in sensorimotor coordination. This thesis shows that motor behavior in hypergravity (1.8 times terrestrial gravity) is consistent with the hypothesis the motor commands are optimized, taking into account the action of gravitational forces on the limb in the optimization process. In addition, forces applied by the subjects on a manipulated object were in direct support to the fact that the object weight was used by the brain for calibrating the internal models of dynamics. These results gave significant insight on the problem of sensorimotor coordination in weightlessness (0 g), given that the sensory information resulting from the action of gravity on the limbs is lost. The results confirm that internal representation of dynamics adapts to the 0 g condition, but it suffers from more uncertainty and, therefore, potentially affects the movement stability. A stabilizing mechanism that accounts for the experimental results is proposed as model for motor behavior under uncertain internal representation of dynamics.

(FSA 3)  – UCL, 2010

Advisors/Committee Members: UCL - SST/ICTM/INMA - Pôle en ingénierie mathématique, Lefèvre, Philippe, Thonnard, Jean-Louis, Van Dooren, Paul, Plaghki, Léon, McIntyre, Joseph, Stramigioli, Stefano.

Subjects/Keywords: Motor control; Motor adaptation; Internal models; Gravity; Optimal control

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

APA (6th Edition):

Crevecoeur, F. (2010). The gravitational forces as fundamental input for sensorimotor coordination. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/30481

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

Chicago Manual of Style (16th Edition):

Crevecoeur, Frédéric. “The gravitational forces as fundamental input for sensorimotor coordination.” 2010. Thesis, Université Catholique de Louvain. Accessed June 24, 2019. http://hdl.handle.net/2078.1/30481.

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

MLA Handbook (7th Edition):

Crevecoeur, Frédéric. “The gravitational forces as fundamental input for sensorimotor coordination.” 2010. Web. 24 Jun 2019.

Vancouver:

Crevecoeur F. The gravitational forces as fundamental input for sensorimotor coordination. [Internet] [Thesis]. Université Catholique de Louvain; 2010. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/2078.1/30481.

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

Council of Science Editors:

Crevecoeur F. The gravitational forces as fundamental input for sensorimotor coordination. [Thesis]. Université Catholique de Louvain; 2010. Available from: http://hdl.handle.net/2078.1/30481

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


Université Catholique de Louvain

2. Giard, Thibault. Grip force adaptation to static and dynamic torques during object manipulation.

Degree: 2016, Université Catholique de Louvain

The human hand is an amazing tool. It is one of the most important interface between us and the world by allowing us to touch and manipulate it. Its complexity is certainly similar to its usefulness. To control the manipulatory and the exploratory functions of the hand, the brain needs to collect, to store, and to process adequately a considerable quantity of data about the objects and the environment. When gripping an object with the index finger and the thumb only, all this information is used to control the kinematics and the dynamics of the movement. In some situations, we have to manipulate unbalanced objects that produce load torques at the finger/object interface. The objective of the present work was to further investigate the control strategies during object manipulation in presence of load torques. The results show that the grip force adaptation is slowed down when a load torque is present. The reproduction of a slower adaptation when manipulating torques under microgravity suggests that the presence of load torques experienced during movement may alter our internal estimates of required grip force. The last hypothesis tested was that the difference in control strategies when a load torque is present comes from a poor ability to discriminate load torques. Indeed, a poor ability to discriminate load torque was found during the active task. However, this bad discrimination was not due to an incapacity of the sensory system as the discrimination during the passive stimulation was much better. In this thesis, it has been shown that load torques have major impacts on grip control and we brought new elements to better understand these impacts.

(FSA - Sciences de l'ingénieur)  – UCL, 2016

Advisors/Committee Members: UCL - SST/ICTM/INMA - Pôle en ingénierie mathématique, UCL - Ecole Polytechnique de Louvain, Lefèvre, Philippe, Thonnard, Jean-Louis, Crevecoeur, Frédéric, Danion, Frédéric, McIntyre, Joseph, Jungers, Raphaël, Ronsse, Renaud.

Subjects/Keywords: Motor prediction; Motor adaptation; Weightlessness; Object manipulation; Grip force; Parabolic flight; Neuroscience; Cutaneous feedback; Torque; Motor control; Precision grip

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

APA (6th Edition):

Giard, T. (2016). Grip force adaptation to static and dynamic torques during object manipulation. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/172504

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

Chicago Manual of Style (16th Edition):

Giard, Thibault. “Grip force adaptation to static and dynamic torques during object manipulation.” 2016. Thesis, Université Catholique de Louvain. Accessed June 24, 2019. http://hdl.handle.net/2078.1/172504.

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

MLA Handbook (7th Edition):

Giard, Thibault. “Grip force adaptation to static and dynamic torques during object manipulation.” 2016. Web. 24 Jun 2019.

Vancouver:

Giard T. Grip force adaptation to static and dynamic torques during object manipulation. [Internet] [Thesis]. Université Catholique de Louvain; 2016. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/2078.1/172504.

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

Council of Science Editors:

Giard T. Grip force adaptation to static and dynamic torques during object manipulation. [Thesis]. Université Catholique de Louvain; 2016. Available from: http://hdl.handle.net/2078.1/172504

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

.