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Gamma and beta bursts during working memory readout suggest roles in its volitional control
KTH, School of Computer Science and Communication (CSC), Computational Science and Technology (CST).ORCID iD: 0000-0001-6553-823X
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2018 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 9, no 1, article id 394Article in journal (Refereed) Published
Abstract [en]

Working memory (WM) activity is not as stationary or sustained as previously thought. There are brief bursts of gamma (~50-120 Hz) and beta (~20-35 Hz) oscillations, the former linked to stimulus information in spiking. We examined these dynamics in relation to readout and control mechanisms of WM. Monkeys held sequences of two objects in WM to match to subsequent sequences. Changes in beta and gamma bursting suggested their distinct roles. In anticipation of having to use an object for the match decision, there was an increase in gamma and spiking information about that object and reduced beta bursting. This readout signal was only seen before relevant test objects, and was related to premotor activity. When the objects were no longer needed, beta increased and gamma decreased together with object spiking information. Deviations from these dynamics predicted behavioral errors. Thus, beta could regulate gamma and the information in WM.

Place, publisher, year, edition, pages
Nature Publishing Group , 2018. Vol. 9, no 1, article id 394
Keyword [en]
article, error, Haplorhini, nonhuman, working memory
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:kth:diva-223107DOI: 10.1038/s41467-017-02791-8ISI: 000423430900014Scopus ID: 2-s2.0-85041207564OAI: oai:DiVA.org:kth-223107DiVA, id: diva2:1185988
Note

Export Date: 13 February 2018; Article; Correspondence Address: Lundqvist, M.; Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, 43 Vassar Street, United States; email: lundqvis@mit.edu. QC 20180227

Available from: 2018-02-27 Created: 2018-02-27 Last updated: 2018-02-27Bibliographically approved

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Herman, Pawel

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