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Recalibration of audiovisual simultaneity

Fujisaki, Waka and Shimojo, Shinsuke and Kashino, Makio and Nishida, Shin'ya (2004) Recalibration of audiovisual simultaneity. Nature Neuroscience, 7 (7). pp. 773-778. ISSN 1097-6256. doi:10.1038/nn1268.

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To perceive the auditory and visual aspects of a physical event as occurring simultaneously, the brain must adjust for differences between the two modalities in both physical transmission time and sensory processing time. One possible strategy to overcome this difficulty is to adaptively recalibrate the simultaneity point from daily experience of audiovisual events. Here we report that after exposure to a fixed audiovisual time lag for several minutes, human participants showed shifts in their subjective simultaneity responses toward that particular lag. This 'lag adaptation' also altered the temporal tuning of an auditory-induced visual illusion, suggesting that adaptation occurred via changes in sensory processing, rather than as a result of a cognitive shift while making task responses. Our findings suggest that the brain attempts to adjust subjective simultaneity across different modalities by detecting and reducing time lags between inputs that likely arise from the same physical events.

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Additional Information:© 2004 Nature Publishing Group. Received 22 January 2004; Accepted 27 April 2004; Published online: 13 June 2004. We thank D. Arnold, M. Changizi, T. Hirahara, A. Johnston and D. Wu. This work was partially supported by the Human Frontier Science Program (RGP0070/2003-C).
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Human Frontier Science ProgramRGP0070/2003-C
Issue or Number:7
Record Number:CaltechAUTHORS:20150409-084441807
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Official Citation:Recalibration of audiovisual simultaneity pp773 - 778 Waka Fujisaki, Shinsuke Shimojo, Makio Kashino & Shin'ya Nishida Published online: 13 June 2004 | doi:10.1038/nn1268
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56507
Deposited By: Ruth Sustaita
Deposited On:09 Apr 2015 18:16
Last Modified:10 Nov 2021 21:00

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