Human brain information processing during stereoscopic vision - A study by event-related potentials and the dipole analysis


Saito M., YAMANOİ T., Ohnishi S., Yamazaki T.

Japanese Journal of Medical Electronics and Biological Engineering, vol.39, no.4, pp.312-317, 2001 (Scopus) identifier

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The authors recorded 19 ch event-related potentials (ERPs) during binocular stereoscopic vision by random-dot stereograms (RDSs) from 9 subjects. The stereoscopic vision was invoked by three kinds of RDSs with middle-sized, large, and no disparities. The subjects with liquid crystal glasses were requested to press a button when the stimuli were stereoscopically perceived and to press another button without stereopsis. From the multiple equivalent current dipole source localization (ECDL) of differential waveforms between middle-sized or large, and no disparities, it followed that ECDs for components with negative peaks at 400 ms were located at the parietal cortex, and that those for earlier components with a positive peak at 100 ms and a negative peak at 250 ms were localized to the striate and prestriate cortices, respectively.