Cited by 34Functional Brain Connectivity StudiesTreatment of Major DepressionTranscranial Magnetic Stimulation Studies

Multilayer MEG functional connectivity as a potential marker for suicidal thoughts in major depressive disorder

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Nugent, Allison C., Ballard, Elizabeth D., Gilbert, Jessica R., Tewarie, Prejaas K., Brookes, Matthew J., Zarate, Carlos A.·2020·NeuroImage: Clinical

Abstract

Major depressive disorder (MDD) is highly heterogeneous in its clinical presentation. The present exploratory study used magnetoencephalography (MEG) to investigate electrophysiological intrinsic connectivity differences between healthy volunteers and unmedicated participants with treatment-resistant MDD. The study examined canonical frequency bands from delta through gamma. In addition to group comparisons, correlational studies were conducted to determine whether connectivity was related to five symptom factors: depressed mood, tension, negative cognition, suicidal thoughts, and amotivation. The MDD and healthy volunteer groups did not differ significantly at baseline when corrected across all frequencies and clusters, although evidence of generalized slowing in MDD was observed. Notably, however, electrophysiological connectivity was strongly related to suicidal thoughts, particularly as coupling of low frequency power fluctuations (delta and theta) with alpha and beta power. This analysis revealed hub areas underlying this symptom cluster, including left hippocampus, left anterior insula, and bilateral dorsolateral prefrontal cortex. No other symptom cluster demonstrated a relationship with neurophysiological connectivity, suggesting a specificity to these results as markers of suicidal ideation.

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  • Similar findings of distinct between-network associations between cross-frequency amplitude-amplitude connectivity in low-frequency (delta and theta) bands and SI have been reported, with particular hubs emerging from the hippocampus, anterior insula, and bilateral dorsolateral prefrontal cortex.

    “Similar findings of distinct, between-network associations between cross-frequency amplitude-amplitude connectivity in low-frequency (delta and theta) bands and SI have been reported, with particular hubs emerging from the hippocampus, anterior insula, and bilateral dorsolateral prefrontal cortex (81).”

    From New methods for assessing rapid changes in suicide risk (2021) · cites this paper as [81]

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Authors
Nugent, A. C., Ballard, E. D., Gilbert, J. R., Tewarie, P. K., Brookes, M. J., & Zarate, C. A.
Affiliations
  • National Institutes of Health (US)
  • University of Nottingham (GB)
Corresponding author
Nugent, Allison C.
Venue
NeuroImage: Clinical
Publisher
Elsevier BV
Published
2020
Volume
28
Pages
102378
ISSN
2213-1582 (ISSN-L)
OpenAlex
W3047922122
Cited by
34
References
74
Citations by year
2026: 3 · 2025: 7 · 2024: 5 · 2023: 7 · 2022: 6 · 2021: 6
FWCI
2.55
Type
journal article
Language
en
Open access
Locations
  • NeuroImage Clinical (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Funders
  • National Institute of Mental Health
  • National Institutes of Health
  • National Alliance for Research on Schizophrenia and Depression
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
Keywords
major depressive disorder, suicidal ideation, functional connectivity, treatment-resistant depression, intrinsic functional connectivity, delta and theta oscillations, alpha and beta oscillations, hippocampus, anterior insula, dorsolateral prefrontal cortex, neurophysiological markers, symptom clusters, amotivation, negative thinking
MeSH terms
Cerebral Cortex, Depressive Disorder, Major, Major Depressive Disorder, Humans, Magnetic Resonance Imaging, Magnetoencephalography, Suicidal Ideation

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