Ito M, Gilbert C D
The Rockefeller University, New York, New York 10021, USA.
Neuron. 1999 Mar;22(3):593-604. doi: 10.1016/s0896-6273(00)80713-8.
The response properties of cells in the primary visual cortex (V1) were measured while the animals directed their attention either to the position of the neuron's receptive field (RF), to a position away from the RF (focal attention), or to four locations in the visual field (distributed attention). Over the population, varying attentional state had no significant effect on the response to an isolated stimulus within the RF but had a large influence on the facilitatory effects of contextual lines. We propose that the attentional modulation of contextual effects represents a gating of long range horizontal connections within area V1 by feedback connections to V1 and that this gating provides a mechanism for shaping responses under attention to stimulus configuration.
在动物将注意力导向神经元感受野（RF）的位置、远离RF的位置（焦点注意力）或视野中的四个位置（分布式注意力）时，对初级视觉皮层（V1）中细胞的反应特性进行了测量。在总体上，不同的注意力状态对RF内孤立刺激的反应没有显著影响，但对背景线条的促进作用有很大影响。我们提出，背景效应的注意力调制代表了通过向V1的反馈连接对V1区域内长距离水平连接的一种门控，并且这种门控为在关注刺激配置时塑造反应提供了一种机制。
