Brain-wide Maps Reveal Stereotyped Cell-Type-Based Cortical Architecture and Subcortical Sexual Dimorphism.
Cell
; 171(2): 456-469.e22, 2017 Oct 05.
Article
de En
| MEDLINE
| ID: mdl-28985566
ABSTRACT
The stereotyped features of neuronal circuits are those most likely to explain the remarkable capacity of the brain to process information and govern behaviors, yet it has not been possible to comprehensively quantify neuronal distributions across animals or genders due to the size and complexity of the mammalian brain. Here we apply our quantitative brain-wide (qBrain) mapping platform to document the stereotyped distributions of mainly inhibitory cell types. We discover an unexpected cortical organizing principle sensory-motor areas are dominated by output-modulating parvalbumin-positive interneurons, whereas association, including frontal, areas are dominated by input-modulating somatostatin-positive interneurons. Furthermore, we identify local cell type distributions with more cells in the female brain in 10 out of 11 sexually dimorphic subcortical areas, in contrast to the overall larger brains in males. The qBrain resource can be further mined to link stereotyped aspects of neuronal distributions to known and unknown functions of diverse brain regions.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Encéphale
/
Cartographie cérébrale
/
Caractères sexuels
Type d'étude:
Prognostic_studies
Limites:
Animals
/
Female
/
Humans
/
Male
Langue:
En
Journal:
Cell
Année:
2017
Type de document:
Article
Pays d'affiliation:
États-Unis d'Amérique