FUNCTIONAL-ORGANIZATION OF THE MEDIAL GENICULATE-BODY SUBDIVISIONS OF THE AWAKE SQUIRREL-MONKEY
FUNCTIONAL-ORGANIZATION OF THE MEDIAL GENICULATE-BODY SUBDIVISIONS OF THE AWAKE SQUIRREL-MONKEY
复制标题
DOI：
10.1016/0006-8993(85)91222-3
复制
发表时间：
1985-12-23
期刊：
影响因子：
2.9
通讯作者：
YESHURUN, Y
中科院分区：
文献类型：
--
作者：
ALLON, N;YESHURUN, Y
本文研究了清醒状态下松鼠猴内侧膝状体（MGB）138个细胞对7种特异性发声的反应特性。细胞分为4个亚群：腹侧亚群26个，内侧亚群24个，外侧亚群46个。42个单元位于分区之间的边界上，代表第四组。没有显着差异，发现之间的细分就其选择性，也没有在任何细分的细胞优先响应任何特定的发声。另一方面，腹侧和外侧分区的反应模式与内侧分区的反应模式显示出显著差异（P < 0.001，卡方检验）。内侧亚区的大多数细胞（87.5%）对7种发声（主要是“开”或“维持”）的反应模式相似，而腹侧亚区和外侧亚区的大多数细胞（分别为61.5%和69.6%）对各种发声的反应模式复杂、时锁和不同。表现出的反应，其特征在于作为两种类型之间的中间体的细胞主要积累在或接近MGB的内侧和其他细分之间的边界。每个响应模式的可能作用进行了讨论相对于分区的皮质的投影。
The response properties of 138 cells in the medial geniculate body (MGB), of the awake squirrel monkey (Saimiri sciureus), to 7 species-specific vocalizations were studied. Cells were divided into 4 subgroups: 26 in the ventral, 24 in the medial and 46 in the lateral subdivision. Forty-two cells located on the borders between the subdivisions represent the fourth group. No significant differences were found between the subdivisions with respect to their selectivity, nor did cells in any subdivision respond preferentially to any particular vocalization. On the other hand, the response patterns of the ventral and the lateral subdivisions showed significant differences (P < 0.001, .chi.2-test) from those of the medial subdivision. Most of the cells in the medial subdivision (87.5%) responded with similar response pattern to the 7 vocalizations (mainly ''on'' or ''sustain''), while most of the cells in the ventral and the lateral subdivisions (61.5% and 69.6% respectively) responded with complex, time-locked and different patterns to the various vocalizations. Cells that exhibited a response characterized as an intermediate between the two types were accumulated mainly on or close to the borders between the medial and the other subdivisions of the MGB. The possible role of each response patterns is discussed with respect to the projection of the subdivisions to the cortex.