Journal
PSYCHIATRY INVESTIGATION
Volume 16, Issue 1, Pages 80-86Publisher
KOREAN NEUROPSYCHIATRIC ASSOC
DOI: 10.30773/pi.2018.11.12.2
Keywords
Functional near-infrared spectroscopy (f-NIRS); Depression; Biomarker; Left frontal cortex
Categories
Funding
- JSPS KAKENHI [15K15433, 16K10196]
- Grants-in-Aid for Scientific Research [16K10196, 15K15433] Funding Source: KAKEN
Ask authors/readers for more resources
Objective Accumulated evidence colleted via functional near-infrared spectmscopy (fNIRS) has been reported with regard to mental disorders. A previous finding revealed that emotional words evoke left frontal cortex activity in patients with depression. The primary aim of the current study was to replicate this finding using an independent dataset and evaluate the brain region associated with the severity of depression using an emotional Stroop task. Methods Oxygenized and deoxygenized hemoglobin recording in the brain by fNIRS on 14 MDD patients and 20 normal controls. Results Hyperactivated oxygenized hemoglobin was observed in the left frontal cortex on exposure to unfavorable stimuli, but no significant difference was found among patients with depression compared with healthy controls on exposure to favorable stimuli. This result is consistent with previous findings. Moreover, an evoked wave associated with the left upper frontal cortex on favorable stimuli was inversely correlated with the severity of depression. Conclusion Our current work using fNIRS provides a potential clue regarding the location of depression symptom severity in the left upper frontal cortex. Future studies should verify our findings and expand them into a precise etiology of depression.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available