Evidence map›Paper›PMID 37206978›Full record

ArticleFrontiers in neural circuits2023

Examining the neural mechanisms of rTMS: a naturalistic pilot study of acute and serial effects in pharmacoresistant depression.

Camila Cosmo, Amin Zandvakili, Nicholas J Petrosino, Thaise Graziele L de O Toutain, José Garcia Vivas Miranda, Noah S Philip

Open access · goldAbstract read
In one paragraph

Article in Frontiers in neural circuits, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.5field-weighted citation impact, top 36% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 4 citations in OpenAlex.

  1. Trial
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Camila CosmoDepartment of Psychiatry and Human Behavior, The Warren Alpert Medical School, Brown University, Providence, RI, United States.
Amin ZandvakiliDepartment of Psychiatry and Human Behavior, The Warren Alpert Medical School, Brown University, Providence, RI, United States.
Nicholas J PetrosinoDepartment of Psychiatry and Human Behavior, The Warren Alpert Medical School, Brown University, Providence, RI, United States.
Thaise Graziele L de O ToutainInstitute of Health Sciences, Federal University of Bahia, Salvador, Brazil.
José Garcia Vivas MirandaInstitute of Physics, Federal University of Bahia, Salvador, Brazil.
Noah S PhilipDepartment of Psychiatry and Human Behavior, The Warren Alpert Medical School, Brown University, Providence, RI, United States.
Brown University · USUniversidade Federal da Bahia · BRProvidence VA Medical Center · US

Funding

Promoting Research Training During Psychiatry ResidencyR25MH101076 · NIMH · BROWN UNIVERSITY · PI AUDREY TYRKA · 2013 to 2026
$2.8M
CSRD VA IK2 CX002115NIMH NIH HHS R25 MH101076
6 · The paper itself

Abstract

Introduction: Previous studies have demonstrated the effectiveness of therapeutic repetitive transcranial magnetic stimulation (rTMS) to treat pharmacoresistant depression. Nevertheless, these trials have primarily focused on the therapeutic and neurophysiological effects of rTMS following a long-term treatment course. Identifying brain-based biomarkers of early rTMS therapeutic response remains an important unanswered question. In this pilot study, we examined the effects of rTMS on individuals with pharmacoresistant depression using a graph-based method, called Functional Cortical Networks (FCN), and serial electroencephalography (EEG). We hypothesized that changes in brain activity would occur early in treatment course. Methods: A total of 15 patients with pharmacoresistant depression underwent five rTMS sessions (5Hz over the left dorsolateral prefrontal cortex, 120%MT, up to 4,000 pulses/session). Five participants received additional rTMS treatment, up to 40 sessions. Resting EEG activity was measured at baseline and following every five sessions, using 64-channel EEG, for 10 minutes with eyes closed. An FCN model was constructed using time-varying graphs and motif synchronization. The primary outcome was acute changes in weighted-node degree. Secondary outcomes included serial FFT-based power spectral analysis and changes in depressive symptoms measured by the 9-Item Patient Health Questionnaire (PHQ-9) and the 30-item Inventory of Depressive Symptoms-Self Report (IDS-SR). Results: We found a significant acute effect over the left posterior area after five sessions, as evidenced by an increase in weighted-node degree of 37,824.59 (95% CI, 468.20 to 75,180.98) and a marginal enhancement in the left frontal region (t (14) = 2.0820, Discussion: Our findings suggest that FCN models and serial EEG may contribute to a deeper understanding of mechanisms underlying rTMS treatment. Additional research is required to investigate the acute and serial effects of rTMS in pharmacoresistant depression and assess whether early EEG changes could serve as predictors of therapeutic rTMS response.

Indexed as

Major Depressive DisorderNeocortexDepressionHumansPilot ProjectsPrefrontal CortexTranscranial Magnetic Stimulationfunctional cortical networksnaturalistic studynon-invasive brain stimulation (NIBS)pharmacoresistant depressionpower spectral analysis (FFT)qEEGrepetitive transcranial magnetic stimulation (rTMS)treatment-resistant depression (TRD)

Identifiers

PMID37206978
PMCPMC10188923
OpenAlexW4367845316

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.