Differential characteristics of face neuron responses within the anterior superior temporal sulcus of macaques
Differential characteristics of face neuron responses within the anterior superior temporal sulcus of macaques
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DOI：
10.1152/jn.00949.2004
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发表时间：
2005-08-01
影响因子：
2.5
通讯作者：
Ono, T
中科院分区：
文献类型：
--
作者：
De Souza, WC;Eifuku, S;Ono, T
猕猴的前上级颞沟（STS）被认为是参与面部识别或识别的传入的感知信息的分析，在前STS的面部神经元显示调谐到他人的面部视图和/或注视方向。虽然众所周知，解剖结构和连接之间的吻侧和尾侧区域的前STS不同，这些地区的功能异质性还没有得到很好的理解。我们记录了猕猴在执行面部识别任务时前STS中面部神经元的活动，并比较了前STS尾侧和吻侧区域面部神经元反应的特征。在尾侧区域，引起最佳反应的面部视图分布在所有测试的视图中;大多数面部神经元对左右视图的反应是对称的。与此相反，在吻侧区的面神经元最佳的反应，以一个单一的斜视图，这些神经元的反应之间的左右对称性是不太明显。根据注视方向的面部神经元反应的调制在吻侧区更明显。一些面部神经元反应特定于特定面部视图和特定凝视方向的某种组合，而另一些则与面部视图和凝视方向之间的相对空间关系相关。综上所述，这些结果表明存在的功能异质性内的前STS，并提出了一个合理的层次组织的面部信息处理。
The anterior superior temporal sulcus (STS) of macaque monkeys is thought to be involved in the analysis of incoming perceptual information for face recognition or identification; face neurons in the anterior STS show tuning to facial views and/or gaze direction in the faces of others. Although it is well known that both the anatomical architecture and the connectivity differ between the rostral and caudal regions of the anterior STS, the functional heterogeneity of these regions is not well understood. We recorded the activity of face neurons in the anterior STS of macaque monkeys during the performance of a face identification task, and we compared the characteristics of face neuron responses in the caudal and rostral regions of the anterior STS. In the caudal region, facial views that elicited optimal responses were distributed among all views tested; the majority of face neurons responded symmetrically to right and left views. In contrast, the face neurons in the rostral region responded optimally to a single oblique view; right-left symmetry among the responses of these neurons was less evident. Modulation of the face neuron responses according to gaze direction was more evident in the rostral region. Some of the face neuron responses were specific to a certain combination of a particular facial view and a particular gaze direction, whereas others were associated with the relative spatial relationship between facial view and gaze direction. Taken together, these results indicated the existence of a functional heterogeneity within the anterior STS and suggested a plausible hierarchical organization of facial information processing.