Functional columns in superior temporal sulcus areas of the common marmoset.
Functional columns in superior temporal sulcus areas of the common marmoset.
复制标题
普通狨猴颞上沟区域的功能柱。
DOI：
10.1097/wnr.0000000000000483
复制
发表时间：
2015
期刊：
影响因子：
1.7
通讯作者：
Ichinohe N
中科院分区：
文献类型：
--
作者：
Suzuki W;Tani T;Banno T;Miyakawa N;Abe H;Ichinohe N
灵长类动物的上级颞沟（STS）皮质区被认为是“社会脑”的一部分。特别是，生物运动刺激引起STS中的神经元反应，表明它们在理解他人行为的能力中的作用。然而，空间组织的功能鉴定STS细胞没有得到很好的理解，因为它是难以确定的细胞在脑沟区的精确位置。在这里，使用一个小的新世界的猴子，普通的绒猴（Callithrix jacchus），有一个无脑的大脑，我们调查的空间组织的细胞响应其他的STS的行动。使用多触点线性阵列电极记录了对显示多种其他类型动作的电影的神经反应，该电极有四个柄（0.4 mm间距），每个柄有八个电极触点（0.2 mm间距）。垂直于皮质表面穿透四个柄。我们发现，STS细胞对其他人的目标导向行为有显著的反应，例如当一只演员绒猴伸手去抓一块食物时。当电极之间的距离匹配时，垂直放置的电极之间的电影响应曲线比水平放置的电极之间的电影响应曲线更相似。这表明普通绒猴STS的高级视觉区存在功能柱。
Cortical areas in the superior temporal sulcus (STS) of primates have been recognized as a part of the ‘social brain’. In particular, biological motion stimuli elicit neuronal responses in the STS, indicating their roles in the ability to understand others’ actions. However, the spatial organization of functionally identified STS cells is not well understood because it is difficult to identify the precise locations of cells in sulcal regions. Here, using a small New World monkey, the common marmoset (Callithrix jacchus) that has a lissencephalic brain, we investigated the spatial organization of the cells responsive to other’s actions in STS. The neural responses to movies showing several types of other’s actions were recorded with multicontact linear-array electrodes that had four shanks (0.4 mm spacing), with eight electrode contacts (0.2 mm spacing) for each shank. The four shanks were penetrated perpendicular to the cortical surface. We found that STS cells significantly responded to other’s goal-directed actions, such as when an actor marmoset was reaching for and grasping a piece of food. The response profiles to the movies were more similar between the vertically positioned electrodes than horizontally positioned electrodes when the distances between electrodes were matched. This indicates that there are functional columns in the higher-order visual areas in STS of the common marmoset.