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首页> 外文期刊>Neuron >Synaptic Integration by V1 Neurons Depends on Location within the Orientation Map.
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Synaptic Integration by V1 Neurons Depends on Location within the Orientation Map.

机译:V1神经元的突触整合取决于方向图内的位置。

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Neurons in the primary visual cortex (V1) are organized into an orientation map consisting of orientation domains arranged radially around pinwheel centers converge. We have combined optical imaging of intrinsic signals with intracellular recordings to estimate the subthreshold inputs and spike outputs of neurons located near pinwheel centers or in orientation domains. We find that neurons near pinwheel centers have subthreshold responses to all stimulus orientations but spike responses to only a narrow range of orientations. Across the map, the selectivity of inputs covaries with the selectivity of orientations in the local cortical network, while the selectivity of spike outputs does not. Thus, the input-output transformation performed by V1 neurons is powerfully influenced by the local structure of the orientation map.
机译:主视皮层(V1)中的神经元被组织成一个方向图,该方向图由围绕风车中心径向排列的方向域组成。我们将内在信号的光学成像与细胞内记录相结合,以估计位于风车中心附近或方向域中的神经元的亚阈值输入和峰值输出。我们发现,风车中心附近的神经元对所有刺激方向都有阈值以下的响应,但对狭窄方向的尖峰响应却没有。在整个图上,输入的选择性与局部皮层网络中方向的选择性共变,而尖峰输出的选择性却没有。因此,由V1神经元执行的输入输出转换会受到方向图局部结构的强烈影响。

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