Anatomical and functional organization of somatosensory areas of the lateral fissure of the new world titi monkey (Callicebus-moloch)
Anatomical and functional organization of somatosensory areas of the lateral fissure of the new world titi monkey (Callicebus-moloch)
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DOI：
10.1002/cne.20237
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发表时间：
2004-08-30
影响因子：
2.5
通讯作者：
Kaas, JH
中科院分区：
文献类型：
--
作者：
Coq, JO;Qi, H;Kaas, JH
研究了猕猴（Callicebusmoloch）躯体感觉皮层前部和外侧的组织结构。多单元微电极记录用于识别身体的多个表示，并且解剖示踪剂注射用于揭示连接。(1)面部的表征在区域3a、3b、1、S2和顶叶腹侧区（PV）中被识别。在3b区，面部从下巴/下唇到上唇和颈部/上面部以吻尾序列表示。区域1中的面部表示与区域3b中的面部表示镜像。另一个面部表示位于区域3a中。S2和PV中的相邻面部表示与区域3b和1中的相邻面部表示呈现镜像图案。(2)两个代表的身体，吻侧和尾侧腹侧体感区（VSr和VSC），被发现在背侧的一部分。VSc大致上是S2身体表象的反转图像，VSr大致上是PV的反转图像。(3)VSr和VSc旁的延髓神经元对听觉刺激或听觉和体感刺激都有反应。(4)在区域3b、1和S2的手部表征中注射示踪剂揭示了这三个区域之间的相互连接。3b区和1区的注射标记腹后核，而S2区的注射标记下腹后核。本研究展示了其他猴子的躯体感觉皮层的特征，同时揭示了可能适用于其他灵长类动物的其他特征。(C)2004 Wiley-Liss，Inc.
The organization of anterior and lateral somatosensory cortex was investigated in titi monkeys (Callicebus moloch). Multiunit microelectrode recordings were used to identify multiple representations of the body, and anatomical tracer injections were used to reveal connections. (1) Representations of the face were identified in areas 3a, 3b, 1, S2, and the parietal ventral area (PV). In area 3b, the face was represented from chin/lower lip to upper lip and neck/upper face in a rostrocaudal sequence. The representation of the face in area 1 mirrored that of area 3b. Another face representation was located in area 3a. Adjoining face representations in S2 and PV exhibited mirror-image patterns to those of areas 3b and 1. (2) Two representations of the body, the rostral and caudal ventral somatosensory areas (VSr and VSc), were found in the dorsal part of the insula. VSc was roughly a reversal image of the S2 body representation, and VSr was roughly a reversal of PV. (3) Neurons in the insula next to VSr and VSc responded to auditory stimuli or to both auditory and somatosensory stimuli. (4) Injections of tracers within the hand representations in areas 3b, 1, and S2 revealed reciprocal connections between these three areas. Injections in areas 3b and 1 labeled the ventroposterior nucleus, whereas injections in S2 labeled the inferior ventroposterior nucleus. The present study demonstrates features of somatosensory cortex of other monkeys in titi monkeys, while revealing additional features that likely apply to other primates. (C) 2004 Wiley-Liss, Inc.