FIG. 1.

Setup and analysis. (a) Channel locations centered over the dorsolateral prefrontal cortex (DLPFC) (four channels) and primary motor cortex (M1) (eight channels). (b) Coherence was measured between (frontal, motor) and within hemispheres (right, left). (Modified picture from brainvoyager.com). Data were analyzed using two methods: (c) data driven method, in which all channels are used to find the maximal coherence between the two regions and (d) minimum-channel method, in which coherence between regions is calculated using only the two channels located directly above the DLPFC and M1 (10–20 system).