Mapping the human cortical surface by combining quantitative t1 with retinotopy.

Détails

Ressource 1Télécharger: BIB_BD5440005E06.P001.pdf (4698.52 [Ko])
Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_BD5440005E06
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Mapping the human cortical surface by combining quantitative t1 with retinotopy.
Périodique
Cerebral Cortex
Auteur(s)
Sereno M.I., Lutti A., Weiskopf N., Dick F.
ISSN
1460-2199 (Electronic)
ISSN-L
1047-3211
Statut éditorial
Publié
Date de publication
2013
Volume
23
Numéro
9
Pages
2261-2268
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
We combined quantitative relaxation rate (R1= 1/T1) mapping-to measure local myelination-with fMRI-based retinotopy. Gray-white and pial surfaces were reconstructed and used to sample R1 at different cortical depths. Like myelination, R1 decreased from deeper to superficial layers. R1 decreased passing from V1 and MT, to immediately surrounding areas, then to the angular gyrus. High R1 was correlated across the cortex with convex local curvature so the data was first "de-curved". By overlaying R1 and retinotopic maps, we found that many visual area borders were associated with significant R1 increases including V1, V3A, MT, V6, V6A, V8/VO1, FST, and VIP. Surprisingly, retinotopic MT occupied only the posterior portion of an oval-shaped lateral occipital R1 maximum. R1 maps were reproducible within individuals and comparable between subjects without intensity normalization, enabling multi-center studies of development, aging, and disease progression, and structure/function mapping in other modalities.
Pubmed
Open Access
Oui
Création de la notice
08/07/2013 10:05
Dernière modification de la notice
20/08/2019 15:31
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