Assessment of stereopsis in rhesus monkeys using visual evoked potentials

摘要: Rhesus monkeys can have deficiencies in stereo vision, making it necessary to screen monkey subjects intended for single cell studies of stereo-based depth processing. We measured VEPs two using a dynamic random-dot display which stereo-defined checkerboard reversed depth. Monkeys fixated upon small dot during stimulus presentation. One showed clear evoked potentials response changes disparity that were similar those obtained human subjects, an identical paradigm. Controls with presentations the monocular sequences (in no reversal be perceived) yielded or much weaker VEPs. In other animal, however, there was difference potential between conditions. These electrophysiological findings closely match performance these same discrimination task they previously trained. conclude this type used behavioral stereopsis.