The electrophysiological index of the central executive determines verbal working memory capacity

Published: May 3, 2020, 10 p.m.

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.05.02.073825v1?rss=1 Authors: Pavlov, Y. G., Kotchoubey, B. Abstract: Working memory (WM) consists of two main components: sensory storage and central executive. We studied cortical oscillatory correlates of these two components in a large sample of 156 participants to assess separately the contribution of them to individual differences in WM. The participants were presented with WM tasks of above-average to high complexity. Some of the tasks required only storage in WM, others required storage and mental manipulations. Our data indicate a close relationship between frontal midline theta, central beta activity and the central executive component of WM. The oscillatory counterparts of the central executive determined individual differences in verbal WM performance. In contrast, alpha activity was not related to the individual differences. The results demonstrate that central executive component of WM, rather than sensory storage capacity, play the decisive role in individual WM capacity limits. Copy rights belong to original authors. Visit the link for more info