DIFFERING AFFERENT CONNECTIONS OF SPIKING AND NONSPIKING WIND-SENSITIVE LOCAL INTERNEURONS IN THE TERMINAL ABDOMINAL-GANGLION OF THE CRICKET GRYLLUS-BIMACULATUS
DIFFERING AFFERENT CONNECTIONS OF SPIKING AND NONSPIKING WIND-SENSITIVE LOCAL INTERNEURONS IN THE TERMINAL ABDOMINAL-GANGLION OF THE CRICKET GRYLLUS-BIMACULATUS
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DOI：
10.1007/bf00197749
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发表时间：
1995-01-01
期刊：
影响因子：
--
通讯作者：
YAMAGUCHI, T
中科院分区：
文献类型：
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作者：
BABA, Y;HIROTA, K;YAMAGUCHI, T
基于细胞内记录和染色，在蟋蟀双斑蟋蟀的终末腹神经节（TAG）中鉴定了15个局部尖峰中间神经元（LSI）和21个局部非尖峰中间神经元（LNI）（图1A和1B）。1、5、6）。虽然大多数LNI显示出明显的方向性（图7），但LSI没有（图3）。LNI的方向性随单个细胞内的记录位点而变化（图8）。电刺激谷物感觉神经提示LNI与两侧尾索的感觉传入纤维呈单突触连接，LSI与感觉传入纤维可能具有多种双侧多突触连接组合。我们发现，尖峰和nonspiking的本地interneurons在谷物感觉系统中的不同，不仅在他们的膜特性，但也在他们的传入连接，并得出结论，他们的不同连接的感觉传入将它们与不同的角色在信号处理。
Fifteen local spiking interneurons (LSIs) and twenty-one local nonspiking interneurons (LNIs) were identified in the terminal abdominal ganglion (TAG) of the cricket Gryllus bimaculatus on the basis of intracellular recording and staining (Figs. 1, 5, 6). Although the majority of LNIs showed sharp directionalities (Fig. 7) the LSIs did not (Fig. 3). The directionality of LNIs varied with the recording sites within a single cell (Fig. 8). Electrical stimulations of the cereal sensory nerve sug gested that the LNIs are connected monosynaptically with the sensory afferents of both the cerci, and that LSIs may possess a variety of bilateral combinations of polysynaptic connections with the sensory afferents. We found that the spiking and the nonspiking local interneurons in the cereal sensory system differ not only in their membrane properties, but also in their afferent connections, and concluded that their differing connectivity to the sensory afferents will associate them with different roles in signal processing.