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• W2934355265 endingPage "2041" @default.
• W2934355265 startingPage "2028" @default.
• W2934355265 abstract "Studying adaptation to Coriolis perturbations of arm movements has advanced our understanding of motor control and learning. We have now applied this paradigm to two-dimensional postural sway. We measured how subjects ( n = 8) standing at the center of a fully enclosed rotating room who made voluntary anterior-posterior swaying movements adapted to the Coriolis perturbations generated by their sway. Subjects underwent four voluntary sway trials prerotation, 20 per-rotation at 10 rpm counterclockwise, and 10 postrotation. Each trial lasted 20 s, and subjects were permitted normal vision. Their voluntary sway during rotation generated Coriolis forces that initially induced rightward deviations of their forward sway paths and leftward deviations of their backward sway. Sagittal plane sway was gradually restored over per-rotation trials, and a mirror image aftereffect occurred in postrotation trials. Dual force plate data analysis showed that subjects learned to counter the Coriolis accelerations during rotation by executing a bimodal torque pattern that was asymmetric across legs and contingent on forward vs. backward movement. The experience-dependent acquisition and washout of this compensation indicate that an internal, feedforward model underlies the leg-asymmetric bimodal torque compensation, contingent on forward vs. backward movement. The learned torque asymmetry we observed for forward vs. backward sway is not consistent with parallel two-leg models of postural control. NEW & NOTEWORTHY This paper describes adaptation to Coriolis force perturbations of voluntary sway in a rotating environment. During counterclockwise rotation, sway paths are deviated clockwise, but full restoration of fore-aft sway is regained in minutes. Negative aftereffects are briefly present postrotation. Current parallel leg models of postural control cannot account for these findings, which show that postural control, like arm movement control, can adapt rapidly and completely to the Coriolis forces generated in artificial gravity environments." @default.
• W2934355265 created "2019-04-11" @default.
• W2934355265 creator A5012964442 @default.
• W2934355265 creator A5079064348 @default.
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• W2934355265 date "2019-06-01" @default.
• W2934355265 modified "2023-09-24" @default.
• W2934355265 title "Rapid adaptation to Coriolis force perturbations of voluntary body sway" @default.
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• W2934355265 doi "https://doi.org/10.1152/jn.00606.2018" @default.
• W2934355265 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30943090" @default.
• W2934355265 hasPublicationYear "2019" @default.
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