Down regulation of vestibular balance stabilizing mechanisms to enable transition between motor states.

ABSTRACT: The neural control of transition between posture and movement encompasses the regulation of reflex-stabilizing mechanisms to enable motion. Optimal feedback theory suggests that such transitions require the disengagement of one motor control policy before the implementation of another. To test this possibility, we investigated the continuity of the vestibular control of balance during transitions between quiet standing and locomotion and between two standing postures. Healthy subjects initiated and terminated locomotion or shifted the distribution of their weight between their feet, while exposed to electrical vestibular stimuli (EVS). The relationship between EVS and ground reaction forces was quantified using time-frequency analyses. Discontinuities corresponding to null coherence period

SUBMITTER: Tisserand R 

PROVIDER: S-EPMC6056236 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature