Journal
AMERICAN JOURNAL OF PHYSICAL MEDICINE & REHABILITATION
Volume 95, Issue 3, Pages E34-E38Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/PHM.0000000000000413
Keywords
Thalamocortical Tract; Mild Traumatic Brain Injury; Papez Circuit; Diffusion Tensor Imaging; Memory
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Funding
- Basic Science Research Program through the National Research Foundation of Korea - Ministry of Education [2013R1A1A4A01013178]
- National Research Foundation of Korea [2013R1A1A4A01013178] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The thalamocingulate tract between the anterior thalamic nuclei and the cingulate gyrus is a part of the Papez circuit. Using diffusion tensor tractography, injury of the thalamocingulate tract was investigated in patients with mild traumatic brain injury. Two patients (patient 1: a 58-yr-old woman and patient 2: a 49-yr-old man) with head trauma resulting from a car accident were enrolled. They were classified as mild traumatic brain injury and no specific lesion was observed on brain magnetic resonance imaging. These patients complained of memory impairment after head trauma. The entire Papez circuits, including thalamocingulate tract, fornix, mammillothalamic tract, and cingulum, were reconstructed in both hemispheres except for the left thalamocingulate tract: patient 1, it was thinner and discontinued compared with the right thalamocingulate tract; and patient 2, it was not reconstructed. The injury of the left thalamocingulate tract appeared to be related to the memory impairment in these patients.
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