Intramodal perceptual grouping modulates multisensory integration: evidence from the crossmodal dynamic capture task

TitleIntramodal perceptual grouping modulates multisensory integration: evidence from the crossmodal dynamic capture task
Publication TypeJournal Article
Year of Publication2005
AuthorsSanabria D, Soto-Faraco S, Chan J, Spence C
JournalNeuroscience letters
Volume377
Issue1
Pagination59–64
Date Published03/2005
ISSN0304-3940
KeywordsAcoustic Stimulation, Acoustic Stimulation: methods, Adult, Analysis of Variance, Auditory Perception, Auditory Perception: physiology, Humans, Motion Perception, Motion Perception: physiology, Photic Stimulation, Photic Stimulation: methods, Psychomotor Performance, Psychomotor Performance: physiology
Abstract

We investigated the extent to which intramodal visual perceptual grouping influences the multisensory integration (or grouping) of auditory and visual motion information. Participants discriminated the direction of motion of two sequentially presented sounds (moving leftward or rightward), while simultaneously trying to ignore a task-irrelevant visual apparent motion stream. The principles of perceptual grouping were used to vary the direction and extent of apparent motion within the irrelevant modality (vision). The results demonstrate that the multisensory integration of motion information can be modulated by the perceptual grouping taking place unimodally within vision, suggesting that unimodal perceptual grouping processes precede multisensory integration. The present study therefore illustrates how intramodal and crossmodal perceptual grouping processes interact to determine how the information in complex multisensory environments is parsed.

URLhttp://dx.doi.org/10.1016/j.neulet.2004.11.069
DOI10.1016/j.neulet.2004.11.069