Adaptation to audiotactile asynchrony

TitleAdaptation to audiotactile asynchrony
Publication TypeJournal Article
Year of Publication2007
AuthorsNavarra J, Soto-Faraco S, Spence C
JournalNeuroscience letters
Date Published02/2007
KeywordsAcoustic Stimulation, Acoustic Stimulation: methods, Adaptation, Adult, Auditory Perception, Auditory Perception: physiology, Discrimination (Psychology), Discrimination (Psychology): physiology, Female, Humans, Male, Physiological, Reaction Time, Reaction Time: physiology, Time Perception, Time Perception: physiology, Touch, Touch: physiology

Previous research has revealed the existence of perceptual mechanisms that compensate for slight temporal asynchronies between auditory and visual signals. We investigated whether temporal recalibration would also occur between auditory and tactile stimuli. Participants were exposed to streams of brief auditory and tactile stimuli presented in synchrony, or else with the auditory stimulus leading by 75ms. After the exposure phase, the participants made temporal order judgments regarding pairs of auditory and tactile events occurring at varying stimulus onset asynchronies. The results showed that the minimal interval necessary to correctly resolve audiotactile temporal order was larger after exposure to the desynchronized streams than after exposure to the synchronous streams. This suggests the existence of a mechanism to compensate for audiotactile asynchronies that results in a widening of the temporal window for multisensory integration.