Brain potentials in affective picture processing: covariation with autonomic arousal and affective report

Emotionally arousing picture stimuli evoked scalp-recorded event-related potentials. A late, slow positive voltage change was observed, which was significantly larger for affective than neutral stimuli. This positive shift began 200–300 ms after picture onset, reached its maximum amplitude ≈1 s after picture onset, and was sustained for most of a 6-s picture presentation period. The positive increase was not related to local probability of...