Parietal disruption alters audiovisual binding in the sound-induced flash illusion

Kamke, Marc R., Vieth, Harrison E., Cottrell, David and Mattingley, Jason B. (2012) Parietal disruption alters audiovisual binding in the sound-induced flash illusion. Neuroimage, 62 3: 1334-1341. doi:10.1016/j.neuroimage.2012.05.063

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Author Kamke, Marc R.
Vieth, Harrison E.
Cottrell, David
Mattingley, Jason B.
Title Parietal disruption alters audiovisual binding in the sound-induced flash illusion
Journal name Neuroimage   Check publisher's open access policy
ISSN 1053-8119
Publication date 2012-09-01
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.neuroimage.2012.05.063
Open Access Status File (Author Post-print)
Volume 62
Issue 3
Start page 1334
End page 1341
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract Selective attention and multisensory integration are fundamental to perception, but little is known about whether, or under what circumstances, these processes interact to shape conscious awareness. Here, we used transcranial magnetic stimulation (TMS) to investigate the causal role of attention-related brain networks in multisensory integration between visual and auditory stimuli in the sound-induced flash illusion. The flash illusion is a widely studied multisensory phenomenon in which a single flash of light is falsely perceived as multiple flashes in the presence of irrelevant sounds. We investigated the hypothesis that extrastriate regions involved in selective attention, specifically within the right parietal cortex, exert an influence on the multisensory integrative processes that cause the flash illusion. We found that disruption of the right angular gyrus, but not of the adjacent supramarginal gyrus or of a sensory control site, enhanced participants' veridical perception of the multisensory events, thereby reducing their susceptibility to the illusion. Our findings suggest that the same parietal networks that normally act to enhance perception of attended events also play a role in the binding of auditory and visual stimuli in the sound-induced flash illusion.
Keyword Angular gyrus
Flash illusion
Multisensory integration
Selective attention
Transcranial magnetic stimulation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online: 30 May 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Brain Institute Publications
Official 2013 Collection
School of Psychology Publications
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Citation counts: TR Web of Science Citation Count  Cited 25 times in Thomson Reuters Web of Science Article | Citations
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Created: Fri, 09 Nov 2012, 02:26:07 EST by Debra McMurtrie on behalf of Queensland Brain Institute