Focused attention modulates visual responses in the primate prefrontal cortex
Focused attention modulates visual responses in the primate prefrontal cortex
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DOI：
10.1152/jn.00273.2003
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发表时间：
2004-02-01
影响因子：
2.5
通讯作者：
Everling, S
中科院分区：
文献类型：
--
作者：
DeSouza, JFX;Everling, S
目前的一些模型提出了前额皮质（PFC）在注意力方面的重要作用。为了测试注意力对 PFC 的影响，我们记录了猴子的 PFC 神经元执行一项任务的情况，其中它们必须注意一个半脑并等待与先前呈现的提示相匹配的单个刺激。神经元在最初的反应中表现出轻微的下降，而在对提示位置的刺激的反应后期活动则有所增强。数据证明了注意力对 PFC 神经元活动的影响，但它们也表明，单一视觉刺激最初在 PFC 神经元的活动中表现出来，即使它们与行为无关。
Several current models propose an important role of the prefrontal cortex (PFC) in attention. To test the effects of attention in PFC, we recorded from PFC neurons in monkeys performing a task in which they had to attend to one hemifield and wait for a single stimulus that matched a previously presented cue. Neurons exhibited a slight decrease in their initial response and an enhanced activity late in the response to a stimulus at the cued location. The data demonstrate attentional effects on the activity of PFC neurons but they also show that single visual stimuli are initially represented in the activity of PFC neurons even when they are behaviorally irrelevant.