approaching significancep = 0.064
Post-hoc t-tests to assess this showed no significant effect of time for any of the groups, but an effect approaching significance was seen for the tDCS group (t = 2.115, d.f. = 9, p = 0.064), with a lower invalid-valid cue RT difference following tDCS (58.7 ms before, 44.2 ms after tDCS), whereas other groups showed an increase.