Woodman Geoffrey F, Kang Min-Suk, Rossi Andrew F, Schall Jeffrey D
Department of Psychology, Vanderbilt Vision Research Center, Vanderbilt Center for Integrative and Cognitive Neuroscience, Vanderbilt University, Nashville, TN 37203, USA.
Proc Natl Acad Sci U S A. 2007 Sep 18;104(38):15111-6. doi: 10.1073/pnas.0703477104. Epub 2007 Sep 11.
A half-century's worth of research has established the existence of numerous event-related potential components measuring different cognitive operations in humans including the selection of stimuli by covert attention mechanisms. Surprisingly, it is unknown whether nonhuman primates exhibit homologous electrophysiological signatures of selective visual processing while viewing complex scenes. We used an electrophysiological technique with macaque monkeys analogous to procedures for recording scalp event-related potentials from humans and found that monkeys exhibit short-latency visual components sensitive to sensory processing demands and lateralizations related to shifting of covert attention similar to the human N2pc component. These findings begin to bridge the gap between the disparate literatures by using electrophysiological measurements to study the deployment of visual attention in the brains of humans and nonhuman primates.
半个世纪的研究已证实，存在众多与事件相关的电位成分，可测量人类不同的认知操作，包括通过隐蔽注意机制选择刺激。令人惊讶的是，目前尚不清楚非人灵长类动物在观看复杂场景时是否表现出选择性视觉加工的同源电生理特征。我们对猕猴使用了一种类似于记录人类头皮事件相关电位的电生理技术，发现猴子表现出对感觉加工需求敏感的短潜伏期视觉成分，以及与隐蔽注意转移相关的偏侧化，类似于人类的N2pc成分。这些发现开始通过使用电生理测量方法来研究人类和非人灵长类动物大脑中视觉注意的部署，从而弥合不同文献之间的差距。
