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

MPG-Autoren

Roux,  F.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

Uhlhaas,  P. J.
Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;

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Zitation

Roux, F., & 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), 16-25. doi:http://dx.doi.org/10.1016/j.tics.2013.10.010.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0024-E21F-C
Zusammenfassung
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.