Cited by 162Transcranial Magnetic Stimulation StudiesTreatment of Major DepressionElectroconvulsive Therapy Studies

Responders to rTMS for depression show increased fronto-midline theta and theta connectivity compared to non-responders

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Bailey, N.W., Hoy, K.E., Rogasch, N.C., Thomson, R.H., McQueen, S., Elliot, D., Sullivan, C.M., Fulcher, B.D. +2 more·2018·Brain Stimulation

Abstract

Background Repetitive transcranial magnetic stimulation (rTMS) is an effective treatment for depression, but only some individuals respond. Predicting response could reduce patient and clinical burden. Neural activity related to working memory (WM) has been related to mood improvements, so may represent a biomarker for response prediction.Primary hypotheses We expected higher theta and alpha activity in responders compared to non-responders to rTMS.Methods Fifty patients with treatment resistant depression and twenty controls performed a WM task while electroencephalography (EEG) was recorded. Patients underwent 5-8 weeks of rTMS treatment, repeating the EEG at week 1 (W1). Of the 39 participants with valid WM-related EEG data from baseline and W1, 10 were responders. Comparisons between responders and non-responders were made at baseline and W1 for measures of theta (4-8 Hz), upper alpha (10-12.5 Hz), and gamma (30-45 Hz) power, connectivity, and theta-gamma coupling. The control group's measures were compared to the depression group's baseline measures separately.Results Responders showed higher levels of WM-related fronto-midline theta power and theta connectivity compared to non-responders at baseline and W1. Responder's fronto-midline theta power and connectivity was similar to controls. Responders also showed an increase in gamma connectivity from baseline to W1, with a concurrent improvement in mood and WM reaction times. An unbiased combination of all measures provided mean sensitivity of 0.90 at predicting responders and specificity of 0.92 in a predictive machine learning algorithm.Conclusion Baseline and W1 fronto-midline theta power and theta connectivity show good potential for predicting response to rTMS treatment for depression.

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Crossref · 10.1016/j.brs.2017.10.015

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Authors
Bailey, N. W., Hoy, K. E., Rogasch, N. C., Thomson, R. H., McQueen, S., Elliot, D., Sullivan, C. M., Fulcher, B. D., Daskalakis, Z. J., & Fitzgerald, P. B.
Affiliations
  • Monash Alfred Psychiatry Research centre (AU)
  • Monash University (AU)
  • Centre for Addiction and Mental Health (CA)
  • Epworth Hospital (AU)
Corresponding author
Bailey, N.W.
Venue
Brain Stimulation
Publisher
Elsevier BV
Published
2018-01
Volume
11
Issue
1
Pages
190-203
ISSN
  • 1876-4754 (ISSN-L)
  • 1935-861X
OpenAlex
W2765484337
Cited by
162
References
80
Citations by year
2026: 11 · 2025: 16 · 2024: 15 · 2023: 32 · 2022: 13 · 2021: 37 · 2020: 14 · 2019: 20 · 2018: 4
FWCI
5.15
Type
journal article
Language
en
Open access
Locations
  • Brain stimulation (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Health and Medical Research Council (6069070)
Topics
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Health Sciences › Medicine › Psychiatry and Mental health › Electroconvulsive Therapy Studies
Keywords
repetitive transcranial magnetic stimulation, treatment-resistant depression, treatment response prediction, working memory, EEG biomarkers, theta-gamma coupling, alpha power, machine learning prediction
MeSH terms
Adolescent, Adult, Affect, Aged, Depression, Depressive Disorder, Electroencephalography, Female, Humans, Male, Memory, Short-Term, Middle Aged, Reaction Time, Theta Rhythm, Case-Control Studies, Treatment Outcome, Transcranial Magnetic Stimulation, Young Adult

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