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Updated: Apr 19, 2026

Investigations on Alterations of Hippocampal Circuit Function Following Mild Traumatic Brain Injury

Investigations on Alterations of Hippocampal Circuit Function Following Mild Traumatic Brain Injury

Published on: November 19, 2012

Microstructural changes in memory and reticular formation neural pathway after simple concussion.

Lin Ouyang¹, Rongyue Shi¹, Yuhui Xiao¹

¹Department of Radiology, the 175 Hospital of Chinese PLA (Southeast Hospital Affiliated to Xiamen University), Zhangzhou 363000, Fujian Province, China.

Neural Regeneration Research

|December 25, 2014

Summary

This summary is machine-generated.

Concussion causes temporary brain changes in pathways for memory and alertness. These microstructural white matter alterations in the corona radiata and midbrain are reversible with rest, unlike other brain regions.

Keywords:

MRI brain brain injury consciousness disturbance diffusion tensor imaging microstructural white matter neural regeneration regeneration reversibility simple concussion

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Assessing Changes in Synaptic Plasticity Using an Awake Closed-Head Injury Model of Mild Traumatic Brain Injury

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Published on: January 20, 2023

Area of Science:

Neuroscience
Medical Imaging

Background:

Concussion often leads to temporary consciousness disturbances.
The brain's microstructural and functional changes post-concussion, and their link to cognitive issues, remain unclear.

Purpose of the Study:

To investigate microstructural white matter changes in a rabbit concussion model.
To explore the reversibility of these changes and their regional specificity.

Main Methods:

Established a rabbit model of simple concussion.
Utilized Magnetic Resonance-Diffusion Tensor Imaging (MR-DTI) to assess white matter integrity.
Measured fractional anisotropy (FA) and apparent diffusion coefficient (ADC) values.

Main Results:

MR-DTI revealed decreased FA and increased ADC in the corona radiata and midbrain, indicating white matter damage.
These changes in memory and reticular formation pathways were reversible after 1 hour of rest.
The corpus callosum, thalamus, and hippocampus showed no significant alterations.

Conclusions:

Simple concussion induces reversible microstructural white matter changes in specific neural pathways.
The extent of these reversible changes varies across different brain regions.