An ERP research on the cerebral functional regions correlated to stereoscopic perception

The binocular disparity is the prime of forming stereopsis. The researches were not focused on basic visual functional areas affecting stereoscopic perception induced by binocular disparity. In this paper, ERP technology was used to study the regulatory region in cerebral cortex which relates to stereoscopic perception induced by binocular disparity. We chose eight subjects to conduct the experiment by using images with different binocular disparities, and we found the stereoscopic perception resulted from binocular disparity evoked N2 wave on all of occipital lobe with large amplitude at 180ms. In addition, the amplitudes of N2 waves in the O channels were lower than those of other channels. It means the regulation of stereoscopic perception induced by binocular disparity needs basic and advanced visual functional areas work together. Meanwhile, it also means the principle areas are the advanced visual functional areas.