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자료유형
학술저널
저자정보
Kang Youbin (Department of Biomedical Sciences Korea University College of Medicine) 김아람 (Department of Biomedical Sciences Korea University College of Medicine Seoul 02841 Korea) Kang Wooyoung (Department of Biomedical Sciences Korea University College of Medicine) Han Kyu-Man (Department of Psychiatry Korea University Anam Hospital Korea University College of Medicine) 함병주 (고려대학교)
저널정보
한국뇌신경과학회 Experimental Neurobiology Experimental Neurobiology Vol.31 No.5
발행연도
2022.10
수록면
343 - 352 (10page)
DOI
10.5607/en22030

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Alexithymia is characterized by impairments in the processing of emotions. Although the disruptions in the white matter (WM) integrity in Major depressive disorder (MDD) has frequently been reported, the underlying relationship with alexithymia remains unclear. In the present study, we investigated WM tracts with Tracts Constrained by UnderLying Anatomy approach to discover potential associations between alexithymia and WM integrity to identify the neural basis of impaired emotional self-awareness in MDD. 101 patients with MDD and 99 healthy sex- and age-matched individuals underwent diffusion-weighted imaging. All participants were assessed with the 20-item Toronto Alexithymia Scale (TAS). TAS scores were significantly higher in MDD patients than in controls. Patients with MDD exhibited significantly lower FA values in the left inferior longitudinal fasciculus and it also showed negative associations with TAS. These results contribute to the neurobiological evidence on the association between MDD and alexithymia. Additionally, they suggest that reduced white matter integrity in the regions constitutes a principal pathophysiology underlying impaired emotional recognition and description in MDD.

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