Fast positive potentials of the human brain cortex to visual stimuli which induce saccades

The EEG was recorded in 7 healthy subjects aged 20-25 years according to the International 10-20 System in the frontal and parietal derivations (F3, F4, Pz, P3, P4) during the saccades related with the visual stimuli. A complex of fast (positive and negative) event-related potentials was recorded in response to visual stimulation before the saccade onset. The amplitude and spatial distribution of these potentials depended on the saccade latency, order of stimuli presentation, personality of a subject etc. The results suggest that the early positive potentials observed in the saccade latent period reflect the activation of the cortical structures which participate in programming and initiation of saccades.