Visual feedback of the moving arm allows complete adaptation of pointing movements to centrifugal and Coriolis forces in human subjects

A classical visuo-manual adaptation protocol carried out on a rotating platform was used to test the ability of subjects to adapt to centrifugal and Coriolis forces when visual feedback of the arm is manipulated. Three main results emerge: (a) an early modification of the initial trajectory of the m...

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Bibliographic Details
Published in:Neuroscience letters 2001-03, Vol.301 (1), p.25-28
Main Authors: Bourdin, C., Gauthier, G., Blouin, J., Vercher, J.-L.
Format: Article
Language:English
Subjects:
Adaptation
Adult
Analysis of Variance
Applied physiology
Arm - physiology
Biological and medical sciences
Centrifugal force
Cognitive science
Cognitive Sciences
Coriolis Force
Human physiology applied to population studies and life conditions. Human ecophysiology
Humans
Life Sciences
Medical sciences
Movement - physiology
Neurons and Cognition
Neuroscience
Pointing movements
Proprioception
Proprioception - physiology
Psychology and behavior
Psychomotor Performance - physiology
Space life sciences
Transports. Aerospace. Diving. Altitude
Vestibular signal
Vision, Ocular - physiology
Visual adaptive phase
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Summary:A classical visuo-manual adaptation protocol carried out on a rotating platform was used to test the ability of subjects to adapt to centrifugal and Coriolis forces when visual feedback of the arm is manipulated. Three main results emerge: (a) an early modification of the initial trajectory of the movements takes place even without visual feedback of the arm; (b) despite the change in the initial trajectory, the new external force decreases the accuracy of the pointing movements when vision is precluded; (c) a visual adaptive phase allows complete adaptation of the pointing movements performed in a modified gravitoinertial field. Therefore vision would be essential for subjects to completely adapt to centrifugal and Coriolis forces. However, other sensory signals (i.e. vestibular and proprioceptive) may constitute the basis for early but partial correction of the pointing movements.
ISSN:0304-3940
1872-7972
DOI:10.1016/S0304-3940(01)01584-1