Fig. 2.

Topography of significant TR-Coh changes in the lower alpha band (8–10 Hz). A) chronic stroke patients B) control group (one-sample t-test of TR-Coh against 0, p < 0.05) and C) the difference between the two groups ([Patients-Controls]; LME, fixed effect GROUP, p < 0.05). Warm colors indicate TR-Coh increases during the grip task compared to resting state (‘enhanced synchrony’) and cold colors indicate decreases. aIPS indicates anterior part of the intraparietal sulcus; cIPS, caudal part of the intraparietal sulcus; M1, primary motor cortex; PMv, ventral premotor cortex; and SMA, supplementary motor area. Hemispheres were mirrored for statistical and display purposes in cases where the contralateral active hemisphere was the right. Topographic plots for the upper alpha and beta band can be found in the Supplementary material (Supplementary Fig. 4). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)