Constrained brain volume in an efficient coding model explains the fraction of excitatory and inhibitory neurons in sensory cortices.

ABSTRACT: The number of neurons in mammalian cortex varies by multiple orders of magnitude across different species. In contrast, the ratio of excitatory to inhibitory neurons (E:I ratio) varies in a much smaller range, from 3:1 to 9:1 and remains roughly constant for different sensory areas within a species. Despite this structure being important for understanding the function of neural circuits, the reason for this consistency is not yet understood. While recent models of vision based on the efficient coding hypothesis show that increasing the number of both excitatory and inhibitory cells improves stimulus representation, the two cannot increase simultaneously due to constraints on brain volume. In this work, we implement an efficient coding model of vision under a constraint on the volume (using

SUBMITTER: Alreja A 

PROVIDER: S-EPMC8809590 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature