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Efficient Coding In Heterogeneous Neuronal Populations

机译:异构神经元群体中的有效编码

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摘要

A ubiquitous feature of neuronal responses within a cortical area is their high degree of inhomogeneity. Even cells within the same functional column are known to have highly heterogeneous response properties when the same stimulus is presented. Whether the wide diversity of neuronal responses is an epiphenomenon or plays a role for cortical function is unknown. Here, we examined the relationship between the heterogeneity of neuronal responses and population coding. Contrary to our expectation, we found that the high variability of intrinsic response properties of individual cells changes the structure of neuronal correlations to improve the information encoded in the population activity. Thus, the heterogeneity of neuronal responses is in fact beneficial for sensory coding when stimuli are decoded from the population response.
机译:皮质区域内神经元反应的普遍特征是其高度不均匀性。当提供相同的刺激时,即使是同一功能栏中的细胞也具有高度异质的响应特性。尚不清楚神经元反应的广泛多样性是表象现象还是对皮层功能起作用。在这里,我们检查了神经元反应的异质性和种群编码之间的关系。与我们的预期相反,我们发现单个细胞的内在反应特性的高变异性改变了神经元相关性的结构,从而改善了种群活动中编码的信息。因此,当从群体反应中解码刺激时,神经元反应的异质性实际上有利于感觉编码。

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