Differences in spiking patterns among cortical neurons
Differences in spiking patterns among cortical neurons
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DOI：
10.1162/089976603322518759
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发表时间：
2003-12-01
影响因子：
2.9
通讯作者：
Tanji, J
中科院分区：
文献类型：
--
作者：
Shinomoto, S;Shima, K;Tanji, J
检查从清醒行为猴子的四个皮层区域记录的尖峰序列，以探索神经元之间不同的特征。我们发现，对于任何给定神经元的每个尖峰序列，尖峰间期的局部变化 L-V 的测量几乎相同，但在神经元之间却存在显着差异。发现四个区域中的三个区域中神经元集合的 L-V 值分布明显呈双峰分布。根据尖峰不规则性分类的两组神经元对相同刺激表现出不同的反应。这表明每个区域的神经元可以分为不同的组，具有独特的尖峰统计数据和相应的功能特性。
Spike sequences recorded from four cortical areas of an awake behaving monkey were examined to explore characteristics that vary among neurons. We found that a measure of the local variation of interspike intervals, L-V, is nearly the same for every spike sequence for any given neuron, while it varies significantly among neurons. The distributions of L-V values for neuron ensembles in three of the four areas were found to be distinctly bimodal. Two groups of neurons classified according to the spiking irregularity exhibit different responses to the same stimulus. This suggests that neurons in each area can be classified into different groups possessing unique spiking statistics and corresponding functional properties.