Spatial Patterns of Intrinsic Brain Activity in Rats with Capsular Stroke

Overview

Journal Brain Behav

Specialty Psychology

Date 2023 Jul 7

PMID 37415300

Authors

Jie Ma

Xue-Jia Li

Wen-Xin Liu

Fei Teng

Xu-Yun Hua

Affiliations

Soon will be listed here.

Abstract

Background: To explore the neural changes of brain activity in rats with circumscribed capsular infarcts to find a new therapeutic target for promoting the functional recovery.

Methods: A total of 18 capsular infarct rats and 18 normal rats were conducted in this study. All animal use procedures were strictly in accordance with the guide for the care and use of laboratory animals. After establishing the photothrombotic capsular infarct model, the functional magnetic resonance imaging (fMRI) data were collected and analyzed.

Results: The fMRI results indicated that the passive movement would induce strong activation in caudate, putamen, frontal association somatosensory cortex, thalamus dorsolateral, and thalamus midline dorsal in control group, and the passive movement would only induce limited activation mostly in somatosensory cortex, thalamus dorsolateral, and thalamus midline dorsal in capsular infarct models. Capsular infarct makes the cortical activity weaken in sensory-related cortex and subcortical nuclei, including capsular area and thalamus.

Conclusions: Such findings imply that the posterior limb of internal capsule (PLIC) is connected to these structures in function, interacts together with them, and, accordingly, the lesion of PLIC manifests the related symptoms.

Citing Articles

Spatial patterns of intrinsic brain activity in rats with capsular stroke.

Ma J, Li X, Liu W, Teng F, Hua X Brain Behav. 2023; 13(8):e3125.

PMID: 37415300 PMC: 10454278. DOI: 10.1002/brb3.3125.

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