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  Spatiotemporal dynamics of auditory attention synchronize with speech

Wöstmann, M., Herrmann, B., Maess, B., & Obleser, J. (2016). Spatiotemporal dynamics of auditory attention synchronize with speech. Proceedings of the National Academy of Sciences of the United States of America, 113(14), 3873-3878. doi:10.1073/pnas.1523357113.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-1A26-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-1124-1
Genre: Journal Article

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 Creators:
Wöstmann, Malte1, 2, Author              
Herrmann, Björn2, 3, Author              
Maess, Burkhard4, Author              
Obleser, Jonas1, 2, Author              
Affiliations:
1Department of Psychology, University of Lübeck, Germany, ou_persistent22              
2Max Planck Research Group Auditory Cognition, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_751545              
3Department of Psychology, University of Western Ontario, London, ON, Canada, ou_persistent22              
4Methods and Development Group MEG and EEG - Cortical Networks and Cognitive Functions, MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_2205650              

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Free keywords: Attention; Neural oscillations; Alpha lateralization; Synchronization; Speech
 Abstract: Attention plays a fundamental role in selectively processing stimuli in our environment despite distraction. Spatial attention induces increasing and decreasing power of neural alpha oscillations (8–12 Hz) in brain regions ipsilateral and contralateral to the locus of attention, respectively. This study tested whether the hemispheric lateralization of alpha power codes not just the spatial location but also the temporal structure of the stimulus. Participants attended to spoken digits presented to one ear and ignored tightly synchronized distracting digits presented to the other ear. In the magnetoencephalogram, spatial attention induced lateralization of alpha power in parietal, but notably also in auditory cortical regions. This alpha power lateralization was not maintained steadily but fluctuated in synchrony with the speech rate and lagged the time course of low-frequency (1–5 Hz) sensory synchronization. Higher amplitude of alpha power modulation at the speech rate was predictive of a listener’s enhanced performance of stream-specific speech comprehension. Our findings demonstrate that alpha power lateralization is modulated in tune with the sensory input and acts as a spatiotemporal filter controlling the read-out of sensory content.

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Language(s): eng - English
 Dates: 2015-11-252016-02-262016-03-212016-04-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1073/pnas.1523357113
PMID: 27001861
PMC: PMC4833226
Other: Epub 2016
 Degree: -

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Title: Proceedings of the National Academy of Sciences of the United States of America
  Abbreviation : PNAS
Source Genre: Journal
 Creator(s):
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Publ. Info: Washington, D.C. : National Academy of Sciences
Pages: - Volume / Issue: 113 (14) Sequence Number: - Start / End Page: 3873 - 3878 Identifier: ISSN: 0027-8424
CoNE: /journals/resource/954925427230