Self-motion direction discrimination in the visually impaired


Autoria(s): Moser, Ivan; Grabherr, Luzia; Hartmann, Matthias; Mast, Fred W.
Data(s)

01/11/2015

Resumo

Despite the close interrelation between vestibular and visual processing (e.g., vestibulo-ocular reflex), surprisingly little is known about vestibular function in visually impaired people. In this study, we investigated thresholds of passive whole-body motion discrimination (leftward vs. rightward) in nine visually impaired participants and nine age-matched sighted controls. Participants were rotated in yaw, tilted in roll, and translated along the interaural axis at two different frequencies (0.33 and 2 Hz) by means of a motion platform. Superior performance of visually impaired participants was found in the 0.33 Hz roll tilt condition. No differences were observed in the other motion conditions. Roll tilts stimulate the semicircular canals and otoliths simultaneously. The results could thus reflect a specific improvement in canal–otolith integration in the visually impaired and are consistent with the compensatory hypothesis, which implies that the visually impaired are able to compensate the absence of visual input.

Formato

application/pdf

Identificador

http://boris.unibe.ch/76257/1/art%253A10.1007%252Fs00221-015-4389-3.pdf

Moser, Ivan; Grabherr, Luzia; Hartmann, Matthias; Mast, Fred W. (2015). Self-motion direction discrimination in the visually impaired. Experimental brain research, 233(11), pp. 3221-3230. Springer 10.1007/s00221-015-4389-3 <http://dx.doi.org/10.1007/s00221-015-4389-3>

doi:10.7892/boris.76257

info:doi:10.1007/s00221-015-4389-3

info:pmid:26223579

urn:issn:0014-4819

Idioma(s)

eng

Publicador

Springer

Relação

http://boris.unibe.ch/76257/

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Moser, Ivan; Grabherr, Luzia; Hartmann, Matthias; Mast, Fred W. (2015). Self-motion direction discrimination in the visually impaired. Experimental brain research, 233(11), pp. 3221-3230. Springer 10.1007/s00221-015-4389-3 <http://dx.doi.org/10.1007/s00221-015-4389-3>

Palavras-Chave #150 Psychology
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

PeerReviewed