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首页> 外文期刊>Neuron >Redundancy in the population code of the retina.
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Redundancy in the population code of the retina.

机译：视网膜人口代码中的冗余。

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摘要

We have explored the manner in which the population of retinal ganglion cells collectively represent the visual world. Ganglion cells in the salamander were recorded simultaneously with a multielectrode array during stimulation with both artificial and natural visual stimuli, and the mutual information that single cells and pairs of cells conveyed about the stimulus was estimated. We found significant redundancy between cells spaced as far as 500 mum apart. When we used standard methods for defining functional types, only ON-type and OFF-type cells emerged as truly independent information channels. Although the average redundancy between nearby cell pairs was moderate, each ganglion cell shared information with many neighbors, so that visual information was represented approximately 10-fold within the ganglion cell population. This high degree of retinal redundancy suggests that design principles beyond coding efficiency may be important at the population level.
机译：我们已经探索了视网膜神经节细胞群体共同代表视觉世界的方式。在人工和自然视觉刺激的刺激下，用多电极阵列同时记录with中的神经节细胞，并估计单个细胞和成对的细胞围绕该刺激传递的相互信息。我们发现相隔500毫米的电池之间存在明显的冗余。当我们使用标准方法定义功能类型时，只有ON型和OFF型单元才真正成为独立的信息通道。尽管附近细胞对之间的平均冗余度适中，但是每个神经节细胞与许多邻居共享信息，因此视觉信息在神经节细胞群体中约代表10倍。这种高度的视网膜冗余表明，超出编码效率的设计原则在人群级别上可能很重要。

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