Working memory and neural oscillations: alpha–gamma versus theta–gamma codes for distinct WM information?

Roux, F. and Uhlhaas, P. J. (2014) Working memory and neural oscillations: alpha–gamma versus theta–gamma codes for distinct WM information? Trends in Cognitive Sciences, 18(1), pp. 16-25. (doi:10.1016/j.tics.2013.10.010)

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Publisher's URL: http://dx.doi.org/10.1016/j.tics.2013.10.010

Abstract

Neural oscillations at different frequencies have recently been related to a wide range of basic and higher cognitive processes. One possible role of oscillatory activity is to assure the maintenance of information in working memory (WM). Here we review the possibility that rhythmic activity at theta, alpha, and gamma frequencies serve distinct functional roles during WM maintenance. Specifically, we propose that gamma-band oscillations are generically involved in the maintenance of WM information. By contrast, alpha-band activity reflects the active inhibition of task-irrelevant information, whereas theta-band oscillations underlie the organization of sequentially ordered WM items. Finally, we address the role of cross-frequency coupling (CFC) in enabling alpha–gamma and theta–gamma codes for distinct WM information.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Uhlhaas, Professor Peter
Authors: Roux, F., and Uhlhaas, P. J.
College/School:College of Medical Veterinary and Life Sciences > Institute of Neuroscience and Psychology
Journal Name:Trends in Cognitive Sciences
Publisher:Elsevier (Cell Press)
ISSN:1364-6613
ISSN (Online):1879-307X

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