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  Beta power encodes contextual estimates of temporal event probability in the human brain

Tavano, A., Schröger, E., & Kotz, S. A. (2019). Beta power encodes contextual estimates of temporal event probability in the human brain. PLoS One, 14(9): e0222420. doi:10.1371/journal.pone.0222420.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-D3CD-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-D3CE-6
Genre: Journal Article

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neu-19-tav-01-beta.pdf (Publisher version), 3MB
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Tavano 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:
Tavano, Alessandro1, 2, Author              
Schröger, Erich2, Author
Kotz, Sonja A.3, 4, Author
Affiliations:
1Department of Neuroscience, Max Planck Institute for Empirical Aesthetics, Max Planck Society, ou_2421697              
2BioCog, Cognitive Incl. Biological Psychology, Institute of Psychology, University of Leipzig, , Leipzig, Germany, ou_persistent22              
3Department of Neuropsychology, Max-Planck-Institute for Human Cognitive and Brain Sciences , Leipzig, Germany, , ou_persistent22              
44 Faculty of Psychology and Neuroscience, Department of Neuropsychology and Psychopharmacology, Maastricht University, Maastricht, The Netherlands, ou_persistent22              

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 Abstract: To prepare for an impending event of unknown temporal distribution, humans internally increase the perceived probability of event onset as time elapses. This effect is termed the hazard rate of events. We tested how the neural encoding of hazard rate changes by providing human participants with prior information on temporal event probability. We recorded behavioral and electroencephalographic (EEG) data while participants listened to continuously repeating five-tone sequences, composed of four standard tones followed by a non-target deviant tone, delivered at slow (1.6 Hz) or fast (4 Hz) rates. The task was to detect a rare target tone, which equiprobably appeared at either position two, three or four of the repeating sequence. In this design, potential target position acts as a proxy for elapsed time. For participants uninformed about the target’s distribution, elapsed time to uncertain target onset increased response speed, displaying a significant hazard rate effect at both slow and fast stimulus rates. However, only in fast sequences did prior information about the target’s temporal distribution interact with elapsed time, suppressing the hazard rate. Importantly, in the fast, uninformed condition pre-stimulus power synchronization in the beta band (Beta 1, 15–19 Hz) predicted the hazard rate of response times. Prior information suppressed pre-stimulus power synchronization in the same band, while still significantly predicting response times. We conclude that Beta 1 power does not simply encode the hazard rate, but—more generally—internal estimates of temporal event probability based upon contextual information.

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Language(s): eng - English
 Dates: 2019-02-162019-08-292019-09-26
 Publication Status: Published online
 Pages: -
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 Rev. Method: Peer
 Identifiers: DOI: 10.1371/journal.pone.0222420
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Title: PLoS One
Source Genre: Journal
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Publ. Info: San Francisco, CA : Public Library of Science
Pages: - Volume / Issue: 14 (9) Sequence Number: e0222420 Start / End Page: - Identifier: ISSN: 1932-6203
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000277850