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  Concurrent temporal channels for auditory processing: Oscillatory neural entrainment reveals segregation of function at different scales

Teng, X., Tian, X., Rowland, J., & Poeppel, D. (2017). Concurrent temporal channels for auditory processing: Oscillatory neural entrainment reveals segregation of function at different scales. PLoS Biology, 15(11): e2000812. doi:10.1371/journal.pbio.2000812.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-32C4-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-32C5-B
Genre: Journal Article

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Concurrent temporal channels for auditory processing.pdf (Publisher version), 6MB
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Concurrent temporal channels for auditory processing.pdf
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© 2017 Teng et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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 Creators:
Teng, Xiangbin1, Author              
Tian, Xing2, 3, Author
Rowland, Jess4, 5, Author
Poeppel, David1, 4, Author              
Affiliations:
1Department of Neuroscience, Max Planck Institute for Empirical Aesthetics, Max Planck Society, ou_2421697              
2New York University Shanghai, Shanghai, China, ou_persistent22              
3NYU-ECNU Institute of Brain and Cognitive Science, NYU Shanghai, Shanghai, China , ou_persistent22              
4Department of Psychology, New York University , New York, New York, United States of America , ou_persistent22              
5School of Visual Arts, New York, New York, United States of America, ou_persistent22              

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 Abstract: Natural sounds convey perceptually relevant information over multiple timescales, and the necessary extraction of multi-timescale information requires the auditory system to work over distinct ranges. The simplest hypothesis suggests that temporal modulations are encoded in an equivalent manner within a reasonable intermediate range. We show that the human auditory system selectively and preferentially tracks acoustic dynamics concurrently at 2 timescales corresponding to the neurophysiological theta band (4–7 Hz) and gamma band ranges (31–45 Hz) but, contrary to expectation, not at the timescale corresponding to alpha (8–12 Hz), which has also been found to be related to auditory perception. Listeners heard synthetic acoustic stimuli with temporally modulated structures at 3 timescales (approximately 190-, approximately 100-, and approximately 30-ms modulation periods) and identified the stimuli while undergoing magnetoencephalography recording. There was strong intertrial phase coherence in the theta band for stimuli of all modulation rates and in the gamma band for stimuli with corresponding modulation rates. The alpha band did not respond in a similar manner. Classification analyses also revealed that oscillatory phase reliably tracked temporal dynamics but not equivalently across rates. Finally, mutual information analyses quantifying the relation between phase and cochlear-scaled correlations also showed preferential processing in 2 distinct regimes, with the alpha range again yielding different patterns. The results support the hypothesis that the human auditory system employs (at least) a 2-timescale processing mode, in which lower and higher perceptual sampling scales are segregated by an intermediate temporal regime in the alpha band that likely reflects different underlying computations.

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 Dates: 2016-08-132017-10-102017-11-02
 Publication Status: Published online
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 Rev. Method: Peer
 Identifiers: DOI: 10.1371/journal.pbio.2000812
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Title: PLoS Biology
  Other : PLoS Biol.
Source Genre: Journal
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Publ. Info: Public Library of Science
Pages: - Volume / Issue: 15 (11) Sequence Number: e2000812 Start / End Page: - Identifier: ISSN: 1544-9173
CoNE: https://pure.mpg.de/cone/journals/resource/111056649444170