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Inter- and Intrahemispheric Sources of Vestibular Signals to V1.

Publication ,  Journal Article
Bouvier, G; Sanzeni, A; Hamada, E; Brunel, N; Scanziani, M
Published in: bioRxiv
December 30, 2024

Head movements are sensed by the vestibular organs. Unlike classical senses, signals from vestibular organs are not conveyed to a dedicated cortical area but are broadcast throughout the cortex. Surprisingly, the routes taken by vestibular signals to reach the cortex are still largely uncharted. Here we show that the primary visual cortex (V1) receives real-time head movement signals - direction, velocity, and acceleration - from the ipsilateral pulvinar and contralateral visual cortex. The ipsilateral pulvinar provides the main head movement signal, with a bias toward contraversive movements (e.g. clockwise movements in left V1). Conversely, the contralateral visual cortex provides head movement signals during ipsiversive movements. Crucially, head movement variables encoded in V1 are already encoded in the pulvinar, suggesting that those variables are computed subcortically. Thus, the convergence of inter- and intrahemispheric signals endows V1 with a rich representation of the animal's head movements.

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Published In

bioRxiv

DOI

EISSN

2692-8205

Publication Date

December 30, 2024

Location

United States
 

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Bouvier, G., Sanzeni, A., Hamada, E., Brunel, N., & Scanziani, M. (2024). Inter- and Intrahemispheric Sources of Vestibular Signals to V1. BioRxiv. https://doi.org/10.1101/2024.11.18.624137
Bouvier, Guy, Alessandro Sanzeni, Elizabeth Hamada, Nicolas Brunel, and Massimo Scanziani. “Inter- and Intrahemispheric Sources of Vestibular Signals to V1.BioRxiv, December 30, 2024. https://doi.org/10.1101/2024.11.18.624137.
Bouvier G, Sanzeni A, Hamada E, Brunel N, Scanziani M. Inter- and Intrahemispheric Sources of Vestibular Signals to V1. bioRxiv. 2024 Dec 30;
Bouvier, Guy, et al. “Inter- and Intrahemispheric Sources of Vestibular Signals to V1.BioRxiv, Dec. 2024. Pubmed, doi:10.1101/2024.11.18.624137.
Bouvier G, Sanzeni A, Hamada E, Brunel N, Scanziani M. Inter- and Intrahemispheric Sources of Vestibular Signals to V1. bioRxiv. 2024 Dec 30;

Published In

bioRxiv

DOI

EISSN

2692-8205

Publication Date

December 30, 2024

Location

United States