Pair-wise 12–20 Hz phase coherence with a peri-central index-finger specific electrode (subject 3).

<p>The index-finger specific site is identified by magnitude of broadband shift, and denoted with a “ship wheel” symbol. (<b>A</b>) The pair-wise phase coherence between sites is calculated with the remainder of the array (during rest periods). The magnitude of the phase coherence (max = 0.32) is reflected in the strength of the color and the electrode diameter, whereas the relative phase-lag of the phase coherence is denoted by the color. Note that the spatial pattern of phase coherence clusters by gyral anatomy. (<b>B</b>) In order to more clearly isolate spatial changes in phase, the complex phase coherence at each site was projected onto the phase of the site of maximum absolute phase coherence. (<b>C</b>) The mean projected phase coherence from each region (shown color coded on inset cortical rendering) is quantified, with error bars denoting the standard error of the mean within each region.