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Reliability of neural entrainment in the human auditory system

Yuranny Cabral-Calderin, Molly J. Henry
doi: https://doi.org/10.1101/2020.12.18.423536
Yuranny Cabral-Calderin
1Max Planck Institute for Empirical Aesthetics, 60322, Frankfurt am Main, Germany.
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  • For correspondence: yuranny.cabral-calderin@ae.mpg.de molly.henry@ae.mpg.de
Molly J. Henry
1Max Planck Institute for Empirical Aesthetics, 60322, Frankfurt am Main, Germany.
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  • For correspondence: yuranny.cabral-calderin@ae.mpg.de molly.henry@ae.mpg.de
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Abstract

Auditory stimuli are often rhythmic in nature. Brain activity synchronizes with auditory rhythms via neural entrainment, and entrainment seems to be beneficial for auditory perception. However, it is not clear to what extent neural entrainment in the auditory system is reliable over time – a necessary prerequisite for targeted intervention. The current study aimed to establish the reliability of neural entrainment over time and to predict individual differences in auditory perception from associated neural activity. Across two different sessions, human listeners detected silent gaps presented at different phase locations of a 2-Hz frequency modulated (FM) noise while EEG activity was recorded. As expected, neural activity was entrained by the 2-Hz FM noise. Moreover, gap detection was sinusoidally modulated by the phase of the 2-Hz FM into which the gap fell. Critically, both the strength of neural entrainment as well as the modulation of performance by the stimulus rhythm were highly reliable over sessions. Moreover, gap detection was predictable from pre-gap neural 2-Hz phase and alpha amplitude. Our results demonstrate that neural entrainment in the auditory system and the resulting behavioral modulation are reliable over time, and that both entrained delta and non-entrained alpha oscillatory activity contribute to near-threshold stimulus perception. The latter suggests that improving auditory perception might require simultaneously targeting entrained brain rhythms as well as the alpha rhythm.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
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 November 25, 2021.
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Reliability of neural entrainment in the human auditory system
Yuranny Cabral-Calderin, Molly J. Henry
bioRxiv 2020.12.18.423536; doi: https://doi.org/10.1101/2020.12.18.423536
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Reliability of neural entrainment in the human auditory system
Yuranny Cabral-Calderin, Molly J. Henry
bioRxiv 2020.12.18.423536; doi: https://doi.org/10.1101/2020.12.18.423536

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