Human perceptual overestimation of whole body roll tilt in hypergravity
Identifieur interne : 000105 ( Pmc/Corpus ); précédent : 000104; suivant : 000106Human perceptual overestimation of whole body roll tilt in hypergravity
Auteurs : Torin K. Clark ; Michael C. Newman ; Charles M. Oman ; Daniel M. Merfeld ; Laurence R. YoungSource :
- Journal of Neurophysiology [ 0022-3077 ] ; 2014.
Abstract
Hypergravity provides a unique environment to study human perception of orientation. We utilized a long-radius centrifuge to study perception of both static and dynamic whole body roll tilt in hypergravity, across a range of angles, frequencies, and net gravito-inertial levels (referred to as G levels). While studies of static tilt perception in hypergravity have been published, this is the first to measure dynamic tilt perception (i.e., with time-varying canal stimulation) in hypergravity using a continuous matching task. In complete darkness, subjects reported their orientation perception using a haptic task, whereby they attempted to align a hand-held bar with their perceived horizontal. Static roll tilt was overestimated in hypergravity, with more overestimation at larger angles and higher G levels, across the conditions tested (overestimated by ∼35% per additional G level,
Url:
DOI: 10.1152/jn.00095.2014
PubMed: 25540216
PubMed Central: 4416546
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