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Naturalistic movies and encoding analysis define areal borders in marmoset third-tier visual cortex.
Shimaoka, Daisuke; Wong, Yan Tat; Rosa, Marcello G P; Price, Nicholas Seow Chiang.
Afiliación
  • Shimaoka D; Department of Physiology and Neuroscience Program, Biomedicine Discovery Institute, Monash University, Clayton, Australia. Electronic address: daisuke.shimaoka@monash.edu.
  • Wong YT; Department of Physiology and Neuroscience Program, Biomedicine Discovery Institute, Monash University, Clayton, Australia; Electrical and Computer Systems Engineering, Monash University, Clayton, Australia.
  • Rosa MGP; Department of Physiology and Neuroscience Program, Biomedicine Discovery Institute, Monash University, Clayton, Australia.
  • Price NSC; Department of Physiology and Neuroscience Program, Biomedicine Discovery Institute, Monash University, Clayton, Australia.
Prog Neurobiol ; 240: 102657, 2024 Aug 03.
Article en En | MEDLINE | ID: mdl-39103115
ABSTRACT
Accurate definition of the borders of cortical visual areas is essential for the study of neuronal processes leading to perception. However, data used for definition of areal boundaries have suffered from issues related to resolution, uniform coverage, or suitability for objective analysis, leading to ambiguity. Here, we present a novel approach that combines widefield optical imaging, presentation of naturalistic movies, and encoding model analysis, to objectively define borders in the primate extrastriate cortex. We applied this method to test conflicting hypotheses about the third-tier visual cortex, where areal boundaries have remained controversial. We demonstrate pronounced tuning preferences in the third-tier areas, and an organizational structure in which the dorsomedial area (DM) contains representations of both the upper and lower contralateral quadrants, and is located immediate anterior to V2. High-density electrophysiological recordings with a Neuropixels probe confirm these findings. Our encoding-model approach offers a powerful, objective way to disambiguate areal boundaries.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Prog Neurobiol Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Prog Neurobiol Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido