Retinotopic organization of feedback projections in primate early visual cortex: implications for active vision - Inserm - Institut national de la santé et de la recherche médicale Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2022

Retinotopic organization of feedback projections in primate early visual cortex: implications for active vision

Résumé

Abstract Feedback connections play a major role in many theories of brain function. Previous studies of feedback connections to early visual areas have mainly concentrated on the representation of central visual fields. Here, injections of tracers at different eccentricities in areas V1 and V2 revealed retinotopically organized feedback. Peripheral injections revealed projections from 15 areas that are not labeled by central injections. Connection strengths for the majority of projections vary significantly with eccentricity in a systematic fashion with respect to distance and origin; whereas projections to central and upper visual fields are significantly stronger from ventral stream areas, peripheral and lower field projections are stronger from the dorsal stream. Non-invasive functional connectivity suggests a similar anatomical organization in humans. These features are discussed with respect to the cognitive and perceptual roles of these feedback pathways.

Domaines

Neurobiologie
Fichier principal
Vignette du fichier
Wang et al 22 BioRxiv.pdf (6.2 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

inserm-03842741 , version 1 (07-11-2022)

Identifiants

Citer

Mingli Wang, Yujie Hou, Loïc Magrou, Joonas A Autio, Pierre Misery, et al.. Retinotopic organization of feedback projections in primate early visual cortex: implications for active vision. 2022. ⟨inserm-03842741⟩
57 Consultations
78 Téléchargements

Partager

Gmail Facebook X LinkedIn More