Richards, J.E. (2003). Cortical sources of event-related-potentials in the prosaccade and antisaccade task. Psychophysiology, 40, 878-894.
The cortical sources of event-related-potentials (ERP) were examined in the prosaccade and antisaccade task in college-age participants. Participants were presented with an antisaccade or prosaccade task with a cue that indicated the spatial location of the target, a cue that indicated the type of eye movement, or no cue. A principal component analysis of the target-related ERP showed a contingent negative variation, parietal activity, and extrastriate occipital activity. An overt spatial cue resulted in extrastriate activity localized in Brodmann’s area 19 whereas a covert cue results in activity in area 19 or 37. The presaccadic ERP activity primarily consisted of a contralateral positive potential and ipsilateral negative potential, which appears to be a result of activity in Brodmann’s areas 8, 10, and 11. These analyses suggest that several areas of the cortex and multiple psychological processes are involved in the control of eye movements in the antisaccade and prosaccade task.