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Integration of visual information in auditory cortex promotes auditory scene analysis through multisensory binding

Huriye Atilgan, View ORCID ProfileStephen M. Town, Katherine C. Wood, Gareth P. Jones, View ORCID ProfileRoss K. Maddox, Adrian K.C. Lee, View ORCID ProfileJennifer K. Bizley
doi: https://doi.org/10.1101/098798
Huriye Atilgan
1The Ear Institute, University College London, UK
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Stephen M. Town
1The Ear Institute, University College London, UK
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Katherine C. Wood
1The Ear Institute, University College London, UK
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Gareth P. Jones
1The Ear Institute, University College London, UK
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Ross K. Maddox
2Department of Biomedical Engineering, University of Rochester, Department of Neuroscience, University of Rochester, Rochester, USA
3Institute for Learning and Brain Sciences and Department of Speech and Hearing Sciences, University of Washington, Seattle, USA
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Adrian K.C. Lee
3Institute for Learning and Brain Sciences and Department of Speech and Hearing Sciences, University of Washington, Seattle, USA
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Jennifer K. Bizley
1The Ear Institute, University College London, UK
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Abstract

How and where in the brain audio-visual signals are bound to create multimodal objects remains unknown. One hypothesis is that temporal coherence between dynamic multisensory signals provides a mechanism for binding stimulus features across sensory modalities in early sensory cortex. Here we report that temporal coherence between auditory and visual streams enhances spiking representations in auditory cortex. We demonstrate that when a visual stimulus is temporally coherent with one sound in a mixture, the neural representation of that sound is enhanced. Supporting the hypothesis that these changes represent a neural correlate of multisensory binding, the enhanced neural representation extends to stimulus features other than those that bind auditory and visual streams. These data provide evidence that early cross-sensory binding provides a bottom-up mechanism for the formation of cross-sensory objects and that one role for multisensory binding in auditory cortex is to support auditory scene analysis.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted January 06, 2017.
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Integration of visual information in auditory cortex promotes auditory scene analysis through multisensory binding
Huriye Atilgan, Stephen M. Town, Katherine C. Wood, Gareth P. Jones, Ross K. Maddox, Adrian K.C. Lee, Jennifer K. Bizley
bioRxiv 098798; doi: https://doi.org/10.1101/098798
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Integration of visual information in auditory cortex promotes auditory scene analysis through multisensory binding
Huriye Atilgan, Stephen M. Town, Katherine C. Wood, Gareth P. Jones, Ross K. Maddox, Adrian K.C. Lee, Jennifer K. Bizley
bioRxiv 098798; doi: https://doi.org/10.1101/098798

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