Experiment 2, single-region HD-tACS procedures.The unifocal frontal (a) and unifocal temporal (b) HD-tACS montages and current-flow models shown on 3D reconstructions of the cortical surface. The location and current intensity value of each stimulating electrode are shown. The frontal montage targeted left prefrontal cortex. The temporal montage targeted left temporal cortex. Each stimulation site used three electrodes in a center-surround, source-sink pattern to achieve maximum focality.
