The Association Between Resting State Functional Connectivity and the Trait of Impulsivity and Suicidal Ideation in Young Depressed Patients With Suicide Attempts
Open accessAbstract
Suicide is a leading cause of death among youth and is strongly associated with major depressive disorder (MDD). However, the neurobiological underpinnings of suicidal behaviour and the identification of risk for suicide in young depressed patients are not yet well-understood. In this study, we used a seed-based correlation analysis to investigate the differences in resting-state functional connectivity (RSFC) in depressed youth with or without a history of suicide attempts and healthy controls (HCs). Suicidal attempters (ATT group, n = 35), non-suicide attempters (NAT group, n = 18), and HCs exhibited significantly different RSFC patterns with the left superior prefrontal gyrus (L-SFG) and left middle prefrontal gyrus (L-MFG) serving as the regions of interest (ROIs). The ATT group showed decreased RSFC of the left middle frontal gyrus with the left superior parietal gyrus compared to the NAT and HC groups. Decreased RSFC between the left superior frontal gyrus and the right anterior cingulate cortex (rACC) was found in the ATT group compared to the NAT and HC groups. Furthermore, the left prefrontal-parietal connectivity was associated with suicidal ideation and levels of impulsivity, but RSFC of the left prefrontal cortex with the rACC was correlated exclusively with impulsivity levels and was not related to suicidal ideation in the ATT group. Our results demonstrated that altered RSFC of the prefrontal-parietal and prefrontal-rACC regions was associated with suicide attempts in depressed youth, and state-related deficits in their interconnectivity may contribute to traits, such as cognitive impairments and impulsivity to facilitate suicidal acts. Our findings suggest that the neural correlates of suicidal behaviours might be dissociable from those related to the severity of current suicidal ideation. Neural circuits underlying suicide attempts differ from those that underlie suicidal ideation.
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The VMPFC appears to exhibit less functional connectivity with the limbic system in individuals with mTBI.
“We are interested in stimulating the ventromedial prefrontal cortex (VMPFC) with iTBS because the VMPFC appears to exhibit less functional connectivity with the limbic system in individuals with mTBI [30].”
From Frontal Pole Neuromodulation for Impulsivity and Suicidality in Veterans With Mild Traumatic Brain Injury and Common Co-Occurring Mental Health Conditions: Protocol for a Pilot Randomized Controlled Trial (2024) · cites this paper as [30]
The Discussion (Prefrontal-Parietal RSFC; page unavailable) reports decreased connectivity between the orbitomedial prefrontal cortex and rostral anterior cingulate cortex in patients with major depressive disorder and suicidal ideation. That is related to the claimed prefrontal connectivity reduction, but the paper does not establish it for the VMPFC–limbic system specifically or for individuals with mTBI. (LLM, conf=0.74)
Experimental — accuracy not yet measuredDiminished VMPFC-limbic connectivity is suspected to be responsible for impulsivity and SI in individuals with mTBI.
“This diminished connectivity is suspected to be responsible for impulsivity and SI in individuals with mTBI [30-32].”
From Frontal Pole Neuromodulation for Impulsivity and Suicidality in Veterans With Mild Traumatic Brain Injury and Common Co-Occurring Mental Health Conditions: Protocol for a Pilot Randomized Controlled Trial (2024) · cites this paper as [30]
The Discussion (Prefrontal-Parietal RSFC; page not provided) reports that reduced fronto-parietal connectivity in young depressed patients with suicide attempts was associated with both impulsivity and suicidal-ideation scores. The Conclusion says prefrontal–rACC connectivity was associated with impulsivity but not suicidal-ideation scores. This paper does not study individuals with mTBI or establish that diminished VMPFC–limbic connectivity is responsible for both outcomes in that population. (LLM, conf=0.88)
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- Authors
- Cao, J., Chen, X., Chen, J., Ai, M., Gan, Y., He, J., & Kuang, L.
- Affiliations
- The Affiliated Yongchuan Hospital of Chongqing Medical University (CN)
- Chongqing Medical University (CN)
- Corresponding author
- Chen, Xiaorong
- Kuang, Li
- Venue
- Frontiers in Psychiatry
- Publisher
- Frontiers Media SA
- Published
- 2021-07-28
- Volume
- 12
- Pages
- 567976-567976
- ISSN
- 1664-0640 (ISSN-L)
- PMC
- PMC8355430
- OpenAlex
- W3184676932
- Cited by
- 29
- References
- 49
- Citations by year
- 2026: 5 · 2025: 5 · 2024: 3 · 2023: 9 · 2022: 7
- FWCI
- 2.50
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Frontiers in Psychiatry (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Informationszentrum Lebenswissenschaften (ZB MED) (submittedVersion, cc-by)
- Funders
- National Natural Science Foundation of China (2018QNXM014, 81671360)
- Chongqing Science and Technology Commission (cstc2018jcyjAX0164)
- Chongqing Medical University
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
- Social Sciences › Psychology › Clinical Psychology › Suicide and Self-Harm Studies
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Keywords
- resting-state functional connectivity, impulsivity, suicidal ideation, suicide attempts, adolescent depression, major depressive disorder, anterior cingulate cortex, superior parietal gyrus
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