Extraction of Sensory Parameters from a Neural Map by Primary Sensory Interneurons
Extraction of Sensory Parameters from a Neural Map by Primary Sensory Interneurons
复制标题
通过初级感觉中间神经元从神经图中提取感觉参数
DOI：
--
复制
发表时间：
2000
影响因子：
5.3
通讯作者：
F. Theunissen
中科院分区：
文献类型：
--
作者：
G. Jacobs;F. Theunissen
我们研究的神经地图内的刺激参数的表示的解剖学基础，并检查这些参数的提取由感觉中间神经元（IN）在板球cercal感觉系统。这些感觉中间神经元对气流方向的提取可以在很大程度上根据系统的解剖学来理解。有两个关键的解剖学限制。(1)具有类似方向调谐特性的传入神经的分支在神经映射中彼此靠近。因此，刺激方向的连续变化导致激活空间模式的连续变化。(2)一个中间神经元的突触连接的限制，一组独特的传入的结果从该中间神经元的独特的解剖结构：其树突的乔木位于传入地图的有限区域内包含传入有限的子集的方向敏感性。这里研究的一组四个中间神经元的功能组织相当于用于计算刺激方向向量的笛卡尔坐标系。对于任何气流刺激方向，激活的中间神经元的放电率可以被神经元在连续的处理阶段解码为笛卡尔坐标。这个笛卡尔坐标系的影响进行了讨论，相对于最佳的编码策略和发展的限制，对细胞的实施，这种编码方案。
We examine the anatomical basis for the representation of stimulus parameters within a neural map and examine the extraction of these parameters by sensory interneurons (INs) in the cricket cercal sensory system. The extraction of air current direction by these sensory interneurons can be understood largely in terms of the anatomy of the system. There are two critical anatomical constraints. (1) The arborizations of afferents with similar directional tuning properties are located near each other within the neural map. Therefore, a continuous variation in stimulus direction causes a continuous variation in the spatial pattern of activation. (2) The restriction of the synaptic connections of an interneuron to a unique set of afferents results from the unique anatomy of that interneuron: its dendritic arbors are located within restricted regions of the afferent map containing afferents with a limited subset of directional sensitivities. The functional organization of the set of four interneurons studied here is equivalent to a Cartesian coordinate system for computing the stimulus direction vector. For any air current stimulus direction, the firing rates of the active interneurons could be decoded as Cartesian coordinates by neurons at successive processing stages. The implications of this Cartesian coordinate system are discussed with respect to optimal coding strategies and developmental constraints on the cellular implementation of this coding scheme.
影响因子：
2.5
作者：
THEUNISSEN, FE;MILLER, JP
通讯作者：
MILLER, JP
板球尾部系统中四个已识别的初级感觉中间神经元动态编码的信息论分析。
DOI：
10.1152/jn.1996.75.4.1345
发表时间：
1996
期刊：
Journal of neurophysiology.
影响因子：
--
作者：
Theunissen,F;Roddey,JC;Stufflebeam,S;Clague,H;Miller,JP
通讯作者：
Miller,JP