The early stimulus-locked EEG discriminating components revealed negatively-correlated activations in the precentral gyrus, superior lateral occipital cortex (LOC), and frontal regions including dorsolateral prefrontal cortex (DLPFC). Components close to the response time (but not locked to response) were correlated positively with superior frontal gyrus (SFG) and areas consistent with draining veins. The later stimulus-locked discriminating components showed additional negative correlations with regions in the left and right angular gyrus/LOC, the SFG/paracingulate gyrus, and the right middle frontal gyrus.
