感觉权衡中的弱普遍性
Weak universality in sensory tradeoffs
摘要：
对于许多生物体来说，感觉神经元的数量在很大程度上是在发育过程中决定的，在强烈的环境线索出现之前。这是尽管事实上，环境可以大幅波动，无论是从一代到一代，并在一个有机体的一生。生物体如何通过对感觉神经元的数量进行硬编码来生存？我们使用率失真理论来处理这个问题。模拟和理论的结合表明，当环境是大的，率失真函数-代理材料成本，时间延迟，和能源需求-只依赖于粗粒度的环境统计，预计将改变进化，而不是个体发育，时间尺度。
英文摘要：
For many organisms, the number of sensory neurons is largely determined during development, before strong environmental cues are present. This is despite the fact that environments can fluctuate drastically both from generation to generation and within an organism's lifetime. How can organisms get by by hard-coding the number of sensory neurons? We approach this question using rate-distortion theory. A combination of simulation and theory suggests that when environments are large, the rate-distortion function---a proxy for material costs, timing delays, and energy requirements---depends only on coarse-grained environmental statistics that are expected to change on evolutionary, rather than ontogenetic, timescales.
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