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  Gamma and beta oscillations in human MEG encode the contents of vibrotactile working memory

von Lautz, A. H., Herding, J., Ludwig, S., Nierhaus, T., Maess, B., Villringer, A., et al. (2017). Gamma and beta oscillations in human MEG encode the contents of vibrotactile working memory. Frontiers in Human Neuroscience, 11: 576. doi:10.3389/fnhum.2017.00576.

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 Creators:
von Lautz, Alexander H.1, 2, Author
Herding, Jan1, 2, Author
Ludwig, Simon1, Author
Nierhaus, Till1, 3, Author           
Maess, Burkhard4, Author                 
Villringer, Arno3, Author           
Blankenburg, Felix1, 2, Author
Affiliations:
1Department of Education and Psychology, FU Berlin, Germany, ou_persistent22              
2Bernstein Center for Computational Neuroscience, Berlin, Germany, ou_persistent22              
3Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
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: Working memory; MEG; Somatosensory; Gamma; Beta; Oscillations
 Abstract: Ample evidence suggests that oscillations in the beta band represent quantitative information about somatosensory features during stimulus retention. Visual and auditory working memory (WM) research, on the other hand, has indicated a predominant role of gamma oscillations for active WM processing. Here we reconciled these findings by recording whole-head magnetoencephalography during a vibrotactile frequency comparison task. A Braille stimulator presented healthy subjects with a vibration to the left fingertip that was retained in WM for comparison with a second stimulus presented after a short delay. During this retention interval spectral power in the beta band from the right intraparietal sulcus and inferior frontal gyrus (IFG) monotonically increased with the to-be-remembered vibrotactile frequency. In contrast, induced gamma power showed the inverse of this pattern and decreased with higher stimulus frequency in the right IFG. Together, these results expand the previously established role of beta oscillations for somatosensory WM to the gamma band and give further evidence that quantitative information may be processed in a fronto-parietal network.

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Language(s): eng - English
 Dates: 2017-08-162017-11-162017-12-04
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.3389/fnhum.2017.00576
PMID: 29255408
PMC: PMC5722803
Other: eCollection 2017
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Project name : “Sensory Computation in Neural Systems” / GRK 1589/2
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Funding organization : German Research Foundation (DFG)

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Title: Frontiers in Human Neuroscience
  Abbreviation : Front Hum Neurosci
Source Genre: Journal
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Publ. Info: Lausanne, Switzerland : Frontiers Research Foundation
Pages: - Volume / Issue: 11 Sequence Number: 576 Start / End Page: - Identifier: ISSN: 1662-5161
CoNE: https://pure.mpg.de/cone/journals/resource/1662-5161