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- W2031173826 abstract "Introduction Major depressive disorder (MDD) is associated with low frustration tolerance, which is a risk factor for suicide. Hippocampal structural and functional abnormalities have been documented to play one of the crucial roles in the pathophysiology of depression. Recent studies have revealed functional differentiation of the hippocampus. Thus, activity of the anterior part was shown to be associated with negative affect mediation. Objectives To investigate brain mechanisms of frustration, comparing its impact on anterior hippocampal connectivity in MDD patients and healthy controls (HCs). Methods 14 MDD and 14 HC right-handed subjects were included in the study and underwent comprehensive clinical assessment. MDD was diagnosed during psychiatric interview according to ICD-10 criteria. The Hamilton Depression Rating Scale was additionally used to assess depressive symptoms. The original Stroop test was modified to evoke a state of frustration by administrering impossible task conditions and negative feedback during 10-min functional magnetic resonance scanning session. Psychophysiological interactions were used to analyze left and right anterior hippocampal functional connectivity changes in response to frustration. The resulted Z-maps were adjusted using Z > 2.3 threshold and a (corrected) cluster significance threshold of p = 0.05. Results Increased functional connectivity of the left anterior hippocampus in response to frustration was significantly higher in MDD patients compared to HCs in the pars opercularis of the right prefrontal cortex and bilateral posterior cingulate regions. Conclusion The results revealed that depressed patients demonstrate abnormally increased anterior hippocampal response to frustration, suggesting that hippocampal-neocortical network impairment may contribute to decreased frustration tolerance associated with MDD" @default.
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- W2031173826 date "2013-01-01" @default.
- W2031173826 modified "2023-10-03" @default.
- W2031173826 title "1440 – Anterior hippocampal connectivity and response to frustration in major depression" @default.
- W2031173826 doi "https://doi.org/10.1016/s0924-9338(13)76472-1" @default.
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