Histograms of t-values for stimulation of ‘matching’ digits.

<p>Voxel responses were grouped across subjects and digit ROIs to compare between BAs and stimulus type. a-c: stroking runs. d-f: mechanical stimulation runs. a/d: BA 3b, b/e: BA 1, c/f: BA2. The results of a t-distribution (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0134610#pone.0134610.e001" target="_blank">Eq 1</a>) fit to the distributions are shown overlaid in red. A small shoulder of high t-values can be seen in panel d; the responses for the mechanical stimulation run in BA3b.