Plasticity of population coding in primary sensory cortex

Current Opinion in Neurobiology
Amy M LeMessurier, Daniel E Feldman

Abstract

That experience shapes sensory tuning in primary sensory cortex is well understood. But effective neural population codes depend on more than just sensory tuning. Recent population imaging and recording studies have characterized population codes in sensory cortex, and tracked how they change with sensory manipulations and training on perceptual learning tasks. These studies confirm sensory tuning changes, but also reveal other features of plasticity, including sensory gain modulation, restructuring of firing correlations, and differential routing of information to output pathways. Unexpectedly strong day-to-day variation exists in single-neuron sensory tuning, which stabilizes during learning. These are novel dimensions of plasticity in sensory cortex, which refine population codes during learning, but whose mechanisms are unknown.

Citations

Feb 2, 2020·Brain Structure & Function·Christian R LeeDavid J Margolis
May 6, 2020·The FEBS Journal·Gen OhtsukiAkitoshi Ozaki
Nov 6, 2020·Experimental Brain Research·Mark Hollins, Luke Athans
Nov 2, 2019·Current Opinion in Neurobiology·József Fiser, Gábor Lengyel
Sep 4, 2021·Proceedings of the National Academy of Sciences of the United States of America·Han G YiMatthew K Leonard

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