Expansion and contraction of resource allocation in sensory bottlenecks.

ABSTRACT: Topographic sensory representations often do not scale proportionally to the size of their input regions, with some expanded and others contracted. In vision, the foveal representation is magnified cortically, as are the fingertips in touch. What principles drive this allocation, and how should receptor density, for example, the high innervation of the fovea or the fingertips, and stimulus statistics, for example, the higher contact frequencies on the fingertips, contribute? Building on work in efficient coding, we address this problem using linear models that optimally decorrelate the sensory signals. We introduce a sensory bottleneck to impose constraints on resource allocation and derive the optimal neural allocation. We find that bottleneck width is a crucial factor in resource allocat

SUBMITTER: Edmondson LR 

PROVIDER: S-EPMC9391039 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature