Key result
Youth with major depressive disorder and past suicide attempts exhibited the poorest decision-making performance and blunted ΔFN compared to those without attempts and healthy controls.
Why the study?
There is limited understanding of how neural activity is modified during decision-making in youth with major depressive disorder who have attempted suicide.
Are neural responses during decision-making altered in youth with major depressive disorder and past suicide attempts compared to those without attempts and healthy controls?
Cross-Sectional (n=119)
Are neural responses during decision-making altered in youth with major depressive disorder and past suicide attempts compared to those without attempts and healthy controls?
Youth with MDD and past suicide attempts exhibit specific neural deficits in decision-making, characterized by blunted feedback evaluation and altered sensitivity to gains and losses.
Answers are grounded in this paper and cite their sources.
Blunted ΔFN during decision-making in depressed youth with suicide attempts is hypothesis-generating; leaves open EEG markers for risk stratification.
An improved understanding of the factors associated with suicidal attempts in youth suffering from depression is crucial for the identification and prevention of future suicide risk. However, there is limited understanding of how neural activity is modified during the process of decision-making. Our study aimed to investigate the neural responses in suicide attempters with major depressive disorder (MDD) during decision-making. Electroencephalography (EEG) was recorded from 79 individuals aged 16-25 with MDD, including 39 with past suicide attempts (SA group) and 40 without (NSA group), as well as from 40 age- and sex- matched healthy controls (HCs) during the Iowa Gambling Task (IGT). All participants completed diagnostic interviews, self-report questionnaires. Our study examined feedback processing by measuring the feedback-related negativity (FRN), ΔFN (FRN-loss minus FRN-gain), and the P300 as electrophysiological indicators of feedback evaluation. The SA group showed poorest IGT performance. SA group and NSA group, compared with HC group, exhibited specific deficits in decision-making (i.e., exhibited smaller (i.e., blunted) ΔFN). Post hoc analysis found that the SA group was the least sensitive to gains and the most sensitive to losses. In addition, we also found that the larger the value of ΔFN, the better the decision-making ability and the lower the impulsivity. Our study highlights the link between suicide attempts and impaired decision-making in individuals with major depressive disorder. These findings constitute an important step in gaining a better understanding of the specific reward-related abnormalities that could contribute to the young MDD patients with suicide attempts.
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Bao et al. (2024) conducted a cross-sectional in Major depressive disorder with and without past suicide attempts (n=119). Past suicide attempts vs. Major depressive disorder without suicide attempts and healthy controls was evaluated on Feedback processing measured by feedback-related negativity (FRN), ΔFN, and P300 during the Iowa Gambling Task. Youth with major depressive disorder and past suicide attempts exhibited the poorest decision-making performance and blunted ΔFN compared to those without attempts and healthy controls.
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