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Geoffrey F. Woodman, Min-Suk Kang, Andrew F. Rossi, Jeffrey D. Schall; Bridging the gap between monkey and man: Macaque event-related potentials reveal similarities to human indices of visual attention. Journal of Vision 2006;6(6):824. doi: https://doi.org/10.1167/6.6.824.
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Nearly a half-century's worth of research has established the existence of a number of human event-related potential (ERP) components that measure a host of different operation during visual cognition. Surprisingly, almost nothing is known about whether nonhuman primates exhibit such electrophysiological signatures of cognition. We report findings from a new technique for recording ERPs from macaque monkeys. During visual search monkeys exhibit ERP components corresponding to those described in human studies. These include several early visual components sensitive to sensory processing demands and attention-directing lateralizations similar to the human N2pc. These findings serve to bridge the gap between the disparate literatures using electrophysiological measurements to study visual processing in the brains of humans and nonhuman primates.
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