Chaos in balance: non-linear measures of postural control predict individual variations in visual illusions of motion.

ABSTRACT: Visually-induced illusions of self-motion (vection) can be compelling for some people, but they are subject to large individual variations in strength. Do these variations depend, at least in part, on the extent to which people rely on vision to maintain their postural stability? We investigated by comparing physical posture measures to subjective vection ratings. Using a Bertec balance plate in a brightly-lit room, we measured 13 participants' excursions of the centre of foot pressure (CoP) over a 60-second period with eyes open and with eyes closed during quiet stance. Subsequently, we collected vection strength ratings for large optic flow displays while seated, using both verbal ratings and online throttle measures. We also collected measures of postural sway (changes in anterior-poste

SUBMITTER: Apthorp D 

PROVIDER: S-EPMC4252150 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature