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Causally Linking Neural Dominance to Perceptual Dominance in a Multisensory Conflict

Yun, Kyongsik and Bhattacharya, Joydeep and Sandkühler, Simone and Lin, Yong-Jun and Iwaki, Sunao and Shimojo, Shinsuke (2020) Causally Linking Neural Dominance to Perceptual Dominance in a Multisensory Conflict. Neuroreport, 31 (13). pp. 991-998. ISSN 0959-4965.

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When different senses are in conflict, one sense may dominate the perception of other sense, but it is not known whether the sensory cortex associated with the dominant modality exerts directional influence, at the functional brain level, over the sensory cortex associated with the dominated modality; in short, the link between sensory dominance and neuronal dominance is not established. In a task involving audio-visual conflict, using magnetoencephalography recordings in humans, we first demonstrated that the neuronal dominance – auditory cortex functionally influencing visual cortex – was associated with the sensory dominance – sound qualitatively altering visual perception. Further, we found that prestimulus auditory-to-visual connectivity could predict the perceptual outcome on a trial-by-trial basis. Subsequently, we performed an effective connectivity-guided neurofeedback electroencephalography experiment and showed that participants who were briefly trained to increase the neuronal dominance from auditory to visual cortex showed higher sensory, that is auditory, dominance during the conflict task immediately after the training. These results shed new light into the interactive neuronal nature of multisensory integration and open up exciting opportunities by enhancing or suppressing targeted mental functions subserved by effective connectivity.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Yun, Kyongsik0000-0002-6103-7187
Bhattacharya, Joydeep0000-0003-3443-9049
Lin, Yong-Jun0000-0003-1239-5217
Iwaki, Sunao0000-0002-7123-7203
Shimojo, Shinsuke0000-0002-1290-5232
Additional Information:© 2020 Wolters Kluwer Health, Lippincott Williams & Wilkins. Funding: This work was partially supported by the ERATO "Implicit Brain Function" project, Japan Science and Technology Agency. Conflict of Interest: None declared.
Funding AgencyGrant Number
Japan Science and Technology AgencyUNSPECIFIED
Subject Keywords:brain oscillations, connectivity, crossmodal, double flash illusion, multisensory, neuronal causality, neurofeedback, prestimulus
Issue or Number:13
Record Number:CaltechAUTHORS:20200407-071651086
Persistent URL:
Official Citation:Yun, Kyongsik; Bhattacharya, Joydeep; Sandkühler, Simone; Lin, Yong-Jun; Iwaki, Sunao; Shimojo, Shinsuke. Causally linking neural dominance to perceptual dominance in a multisensory conflict, NeuroReport: September 9, 2020 - Volume 31 - Issue 13 - p 991-998 doi: 10.1097/WNR.0000000000001505
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102365
Deposited By: Tony Diaz
Deposited On:07 Apr 2020 14:47
Last Modified:12 Aug 2020 15:12

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