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Neural correlates of auditory pattern learning in the auditory cortex

View ORCID ProfileH. Kang, View ORCID ProfileR. Auksztulewicz, View ORCID ProfileH. J. An, N. Abichacra, View ORCID ProfileM. L. Sutter, View ORCID ProfileJ. W. H. Schnupp
doi: https://doi.org/10.1101/2020.09.24.311464
H. Kang
1Department of Neuroscience, City University of Hong Kong
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R. Auksztulewicz
1Department of Neuroscience, City University of Hong Kong
2Neuroscience Department, Max Planck Institute for Empirical Aesthetics, Frankfurt, Germany
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H. J. An
1Department of Neuroscience, City University of Hong Kong
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N. Abichacra
1Department of Neuroscience, City University of Hong Kong
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M. L. Sutter
3Center for Neuroscience, and Section of Neurobiology, Physiology and Behavior, University of California, Davis, California
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J. W. H. Schnupp
1Department of Neuroscience, City University of Hong Kong
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  • For correspondence: wschnupp@cityu.edu.hk
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Abstract

Learning of new auditory stimuli requires repetitive exposure to the stimulus. Fast and implicit learning of sounds presented at random times enables efficient auditory perception. However, it is unclear how such sensory encoding is processed on a neural level. We investigated neural responses that are developed from a passive, repetitive exposure to a specific sound in the auditory cortex of anesthetized rats, using electrocorticography. We presented a series of random sequences that are generated afresh each time, except for a specific reference sequence that remains constant and re-appears at random times across trials. We compared induced activity amplitudes between reference and fresh sequences. Neural responses from both primary and non-primary auditory cortical regions showed significantly decreased induced activity amplitudes for reference sequences compared to fresh sequences, especially in the beta band. This is the first study showing that neural correlates of auditory pattern learning can be evoked even in anesthetized, passive listening animal models.

Competing Interest Statement

The authors have declared no competing interest.

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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 September 24, 2020.
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Neural correlates of auditory pattern learning in the auditory cortex
H. Kang, R. Auksztulewicz, H. J. An, N. Abichacra, M. L. Sutter, J. W. H. Schnupp
bioRxiv 2020.09.24.311464; doi: https://doi.org/10.1101/2020.09.24.311464
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Neural correlates of auditory pattern learning in the auditory cortex
H. Kang, R. Auksztulewicz, H. J. An, N. Abichacra, M. L. Sutter, J. W. H. Schnupp
bioRxiv 2020.09.24.311464; doi: https://doi.org/10.1101/2020.09.24.311464

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