Thalamocortical and corticothalamic connections of multiple functional domains in posterior parietal cortex of galagos.
J Comp Neurol
; 531(1): 25-47, 2023 01.
Article
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| MEDLINE
| ID: mdl-36117273
ABSTRACT
In prosimian galagos, the posterior parietal cortex (PPC) is subdivided into a number of functional domains where long-train intracortical microstimulation evoked different types of complex movements. Here, we placed anatomical tracers in multiple locations of PPC to reveal the origins and targets of thalamic connections of four PPC domains for different types of hindlimb, forelimb, or face movements. Thalamic connections of all four domains included nuclei of the motor thalamus, ventral anterior and ventral lateral nuclei, as well as parts of the sensory thalamus, the anterior pulvinar, posterior and ventral posterior superior nuclei, consistent with the sensorimotor functions of PPC domains. PPC domains also projected to the thalamic reticular nucleus in a somatotopic pattern. Quantitative differences in the distributions of labeled neurons in thalamic nuclei suggested that connectional patterns of these domains differed from each other.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Lóbulo Parietal
/
Galago
Límite:
Animals
Idioma:
En
Revista:
J Comp Neurol
Año:
2023
Tipo del documento:
Article
País de afiliación:
Estados Unidos