Visual suppression at the offset of binocular rivalry

Tom Alexander de Graaf, Raymond van Ee, Dennis Croonenberg, Peter Christiaan Klink, Alexander Thomas Sack

Onderzoeksoutput: Bijdrage aan wetenschappelijk tijdschrift/periodieke uitgaveArtikelWetenschappelijkpeer review

157 Downloads (Pure)

Samenvatting

Various paradigms can make visual stimuli disappear from awareness, but they often involve stimuli that are either relatively weak, competing with other salient inputs, and/or presented for a prolonged period of time. Here we explore a phenomenon that involves controlled perceptual disappearance of a peripheral visual stimulus without these limitations. It occurs when one eye's stimulus is abruptly removed during a binocular rivalry situation. This manipulation renders the remaining stimulus, which is still being presented to the other eye, invisible for up to several seconds. Our results suggest that this perceptual disappearance depends on a visual offset-transient that promotes dominance of the eye in which it occurs regardless of whether the eye is dominant or suppressed at the moment of the transient event. Using computational modeling, we demonstrate that standard rivalry mechanisms of interocular inhibition can indeed be complemented by a hypothesized transient-driven gating mechanism to explain the phenomenon. In essence, such a system suggests that visual awareness is dominated by the eye that receives transients and "sticks with" this eye-based dominance for some time in the absence of further transient events. We refer to this phenomenon as the "disrupted rivalry effect" and suggest that it is a potentially powerful paradigm for the study of cortical suppression mechanisms and the neural correlates of visual awareness.

Originele taal-2Engels
Pagina's (van-tot)2
TijdschriftJournal of Vision
Volume17
Nummer van het tijdschrift1
DOI's
StatusGepubliceerd - 01 jan 2017

Vingerafdruk Duik in de onderzoeksthema's van 'Visual suppression at the offset of binocular rivalry'. Samen vormen ze een unieke vingerafdruk.

Citeer dit