ArticleTranslational psychiatry2025
Heightened effective connectivity of DLPFC-mPFC and DLPFC-ACC circuits in major depressive disorder with suicidal ideation: evidence from a TMS-EEG study.
Article in Translational psychiatry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Abnormal left prefrontal N100 and its relationship with fronto-limbic metabolism in major depressive disorder.Translational psychiatry · 2026Article
- Alpha-band fronto-limbic hyperconnectivity in adolescents with major depression and suicidal ideation.BMC psychiatry · 2026Article
- Unveiling Major Depressive Disorder Through TMS-EEG: From Traditional to Emerging Approaches.Biomedicines · 2025Review
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18 authors.
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Abstract
Major depressive disorder (MDD) with suicidal ideation (SI) significantly impacts global health. Suicidal ideation is associated with alterations in brain network connectivity, yet the effective connectivity from the dorsolateral prefrontal cortex (DLPFC) to functional network nodes remains poorly understood. This study utilizes transcranial magnetic stimulation-electroencephalography (TMS-EEG) to investigate DLPFC connectivity and cortical excitability changes, providing insights into the neurobiological mechanisms and potential treatments for MDD with SI. This study recruited 166 patients with MDD and 61 healthy controls. The TMS-EEG technique was used to assess effective connectivity based on abnormal time-locked TMS evoked potentials (TEPs). Suicidal ideation was assessed using the suicidality module of the Mini International Neuropsychiatric Interview (MINI), and participants were classified into suicidal ideation (SI) and non-SI (NSI) groups based on the presence of active ideation. Subgroup analysis evaluated significant current scattering (SCS) in DLPFC-related circuits through source localization, with multiple functional networks defined as downstream regions of interest. TEP analysis at the F3 electrode revealed no significant differences between the MDD and HC groups across components. However, the SI group exhibited increased N100 amplitudes compared to the NSI group (uncorrected) and healthy controls. Source-level brain network analysis showed that the SCS of the DLPFC-mPFC and DLPFC-ACC circuits was significantly greater in the SI group than in the NSI and control groups. After controlling for age, logistic regression analysis indicated a significant association between these connectivity patterns and the presence of suicidal ideation. MDD patients with suicidal ideation exhibit altered cortical inhibition and enhanced effective connectivity between the DLPFC and key brain regions, such as the ACC and mPFC. These exploratory findings contribute to a deeper understanding of the neural circuitry involved in suicidal ideation.
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