Figure 2

Study design and procedures. (A) HD-tDCS was delivered via a 3 × 1 center-surround configuration as shown in the inset (created using simNIBS⁶⁹). A latex swim cap was fitted to the patients, and key locations were marked on the cap directly. The location of the center electrode was individualized based on perilesional abnormalities. During three separate visits, patients completed a delayed word reading task inside the MEG before and after 20 min of stimulation with one of the anode, cathode or sham configurations. (B) A sequence of events during a single trial of the delayed word reading task, completed by stroke patients and controls inside the MEG. The MEG analysis for tDCS effects included evaluations of the pre-stimulus (i.e., the fixation) and the delay signals (marked by red boxes) extracted from the stimulation sites.