journal.pone.0001253.pdf (378.63 kB)
Dynamic perceptual changes in audiovisual simultaneity
journal contribution
posted on 2023-06-08, 14:34 authored by Ryota Kanai, Bhavin R Sheth, Frans A J Verstraten, Shinsuke ShimojoBACKGROUND The timing at which sensory input reaches the level of conscious perception is an intriguing question still awaiting an answer. It is often assumed that both visual and auditory percepts have a modality specific processing delay and their difference determines perceptual temporal offset. METHODOLOGY/PRINCIPAL FINDINGS Here, we show that the perception of audiovisual simultaneity can change flexibly and fluctuates over a short period of time while subjects observe a constant stimulus. We investigated the mechanisms underlying the spontaneous alternations in this audiovisual illusion and found that attention plays a crucial role. When attention was distracted from the stimulus, the perceptual transitions disappeared. When attention was directed to a visual event, the perceived timing of an auditory event was attracted towards that event. CONCLUSIONS/SIGNIFICANCE This multistable display illustrates how flexible perceived timing can be, and at the same time offers a paradigm to dissociate perceptual from stimulus-driven factors in crossmodal feature binding. Our findings suggest that the perception of crossmodal synchrony depends on perceptual binding of audiovisual stimuli as a common event.
History
Publication status
- Published
File Version
- Published version
Journal
PLoS ONEISSN
1932-6203Publisher
Public Library of ScienceExternal DOI
Issue
12Volume
2Article number
e1253Department affiliated with
- Psychology Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2013-03-11First Open Access (FOA) Date
2013-03-11First Compliant Deposit (FCD) Date
2013-03-11Usage metrics
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