Contextually evoked object-specific responses in human visual cortex
Contextually evoked object-specific responses in human visual cortex
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DOI：
10.1126/science.1093110
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发表时间：
2004-04-02
期刊：
影响因子：
56.9
通讯作者：
Sinha, P
中科院分区：
文献类型：
--
作者：
Cox, D;Meyers, E;Sinha, P
人类的视觉识别过程非常强大，即使在视觉条件严重恶化的情况下也能有效运作。在这种情况下，背景信息可能起着关键作用。在此，我们提供了神经生理学证据，表明背景线索能够引发特定物体的神经反应，而此前人们一直认为这种反应仅仅基于内在线索。具体而言，我们发现“梭状回面孔区”（FFA）对面孔保持其选择性，无论面孔是由内在特征还是背景信息所定义。这一发现进一步阐明了FFA的作用，并揭示了在稳健的物体识别过程中背景处理的神经关联。
Human visual recognition processes are remarkably robust and can function effectively even under highly degraded viewing conditions. Contextual information may play a critical role in such circumstances. Here, we provide neurophysiological evidence that contextual cues can elicit object-specific neural responses, which have hitherto been believed to be based on intrinsic cues alone. Specifically, we find that the "fusiform face area" (FFA) maintains its selectivity for faces without regard to whether the faces are defined intrinsically or contextually. This finding further elucidates the role of the FFA and reveals neural correlates of contextual processing in the service of robust object recognition.