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Dynamical processing of orientation precision in the primary visual cortex

Abstract : The primary visual cortex (V1) processes complex mixtures of orientations to build neural representations of our visual environment. It remains unclear how V1 adapts to the highly volatile distributions of orientations found in natural images. We used naturalistic stimuli and measured the response of V1 neurons to orientation distributions of varying bandwidth. Although broad distributions decreased single neuron tuning, a neurally plausible decoder could robustly retrieve the orientations of stimuli from the population activity at all bandwidths. This decoder demonstrates that V1 population co-encodes orientation and its precision, which enhances population decoding performances. This internal representation is mediated by temporally distinct neural dynamics and supports a precisionweighted description of neuronal message passing in the visual cortex.
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Preprints, Working Papers, ...
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https://hal-amu.archives-ouvertes.fr/hal-03441834
Contributor : frederic chavane Connect in order to contact the contributor
Submitted on : Monday, November 22, 2021 - 7:02:22 PM
Last modification on : Sunday, June 26, 2022 - 3:20:45 AM
Long-term archiving on: : Wednesday, February 23, 2022 - 8:41:14 PM

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  • HAL Id : hal-03441834, version 1

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Hugo J Ladret, Nelson Cortes, Lamyae Ikan, Frédéric Chavane, Christian Casanova, et al.. Dynamical processing of orientation precision in the primary visual cortex. 2021. ⟨hal-03441834⟩

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