Stereoscopic stimuli activate different cortical neurones in man: electrophysiological evidence.

Dynamic random dot stimuli offer the possibility to study cortical neuronal mechanisms related to depth perception in man because these stimuli operationally skip all stages prior to the activation of cortical binocular disparity neurones. In the present paper, the scalp topography of brain potential components evoked by stereoscopic stimuli are compared with those evoked by similar binocular contrast stimuli, and our results present evidence that different neuronal populations of the visual cortex are activated in these two stimulus conditions.