Face recognition is an essential activity of social living, common to many primate species. Underlying processes in the brain have been investigated using various techniques and compared between species. Functional imaging studies have shown face-selective cortical regions and their degree of correspondence across species. However, the temporal dynamics of face processing, particularly processing speed, are likely different between them. Across sensory modalities activation of primary sensory cortices in macaque monkeys occurs at about 3/5 the latency of corresponding activation in humans, though this human simian difference may diminish or disappear in higher cortical regions. We recorded scalp event-related potentials (ERPs) to presentation of faces in macaques and estimated the peak latency of ERP components. Comparisons of latencies between macaques (112 ms) and humans (192 ms) suggested that the 3:5 ratio could be preserved in higher cognitive regions of face processing between those species.

中文翻译：

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头皮ERP与猕猴和人类面部的比较

人脸识别是许多灵长类动物所共有的社交活动的一项基本活动。已经使用各种技术研究了大脑中的基础过程，并在物种之间进行了比较。功能成像研究表明，脸部选择性皮质区域及其在物种间的对应程度。但是，人脸处理的时间动态，尤其是处理速度，在它们之间可能会有所不同。在整个感官形态中，猕猴的主要感觉皮质的激活发生在人类相应激活潜伏期的约3/5处，尽管这种人类猿猴的差异可能会在较高的皮质区域内减小或消失。我们记录了头皮事件相关的电位（ERP）以猕猴的脸的表现，并估计了ERP组件的峰值潜伏期。