Figure 4. Comparison of fixation and saccade P3s.

When P3s in saccade and fixation conditions are compared, saccade related EOG and EEG activity cancels in the saccade target minus saccade distracter subtraction, and there are no significant differences observed between saccade and fixation conditions. A, Grand average across subjects of P3 signal (target minus distracter) at midline electrodes Fz, Cz, Pz and Oz. Time is measured relative to image presentation (fixation condition) or relative to saccade landing (saccade condition). Shaded area represents standard error. B, Topographies of target minus distracter difference in saccade and fixation trials.