Evidence map›Paper›PMID 35051642›Full record

ArticleBrain stimulation

Large-scale EEG neural network changes in response to therapeutic TMS.

Michael C Gold, Shiwen Yuan, Eric Tirrell, E Frances Kronenberg, Jee Won D Kang, Lauren Hindley, Mohamed Sherif, Joshua C Brown, Linda L Carpenter

Open access · goldAbstract read
In one paragraph

Article in Brain stimulation. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 9% 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

23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 29 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

Michael C GoldButler Hospital TMS Clinic and Neuromodulation Research Facility, Providence, RI, USA; Department of Psychiatry and Human Behavior, Alpert Medical School, Brown University, USA.
Shiwen YuanButler Hospital TMS Clinic and Neuromodulation Research Facility, Providence, RI, USA; Department of Psychiatry and Human Behavior, Alpert Medical School, Brown University, USA.
Eric TirrellButler Hospital TMS Clinic and Neuromodulation Research Facility, Providence, RI, USA.
E Frances KronenbergButler Hospital TMS Clinic and Neuromodulation Research Facility, Providence, RI, USA.
Jee Won D KangButler Hospital TMS Clinic and Neuromodulation Research Facility, Providence, RI, USA.
Lauren HindleyButler Hospital TMS Clinic and Neuromodulation Research Facility, Providence, RI, USA.
Mohamed SherifDepartment of Psychiatry and Human Behavior, Alpert Medical School, Brown University, USA; Lifespan Physician Group, Rhode Island Hospital, Providence, RI, USA.
Joshua C BrownButler Hospital TMS Clinic and Neuromodulation Research Facility, Providence, RI, USA; Department of Psychiatry and Human Behavior, Alpert Medical School, Brown University, USA.
Linda L CarpenterButler Hospital TMS Clinic and Neuromodulation Research Facility, Providence, RI, USA; Department of Psychiatry and Human Behavior, Alpert Medical School, Brown University, USA. Electronic address: linda_carpenter_md@brown.edu.
Providence College · US

Funding

Neuroimaging and Neuromodulation CoreP20GM130452 · NIGMS · BUTLER HOSPITAL (PROVIDENCE, RI) · PI GREENBERG, BENJAMIN D · 2019 to 2023
$11.3M
Promoting Research Training During Psychiatry ResidencyR25MH101076 · NIMH · BROWN UNIVERSITY · PI AUDREY TYRKA · 2013 to 2026
$2.8M
Advancing the Research Careers of Women and PEERs in Brain ScienceR25NS124530 · NINDS · BROWN UNIVERSITY · PI CARLOS D AIZENMAN, Diane Lipscombe · 2022 to 2026
$1.3M
NIGMS NIH HHS P20 GM130452NIMH NIH HHS R25 MH101076NINDS NIH HHS R25 NS124530
6 · The paper itself

Abstract

backgroundTranscranial magnetic stimulation (TMS) is an effective therapy for patients with treatment-resistant depression. TMS likely induces functional connectivity changes in aberrant circuits implicated in depression. Electroencephalography (EEG) "microstates" are topographies hypothesized to represent large-scale resting networks. Canonical microstates have recently been proposed as markers for major depressive disorder (MDD), but it is not known if or how they change following TMS.

methodsResting EEG was obtained from 49 MDD patients at baseline and following six weeks of daily TMS. Polarity-insensitive modified k-means clustering was used to segment EEGs into constituent microstates. Microstates were localized via sLORETA. Repeated-measures mixed models tested for within-subject differences over time and t-tests compared microstate features between TMS responder and non-responder groups.

resultsSix microstates (MS-1 - MS-6) were identified from all available EEG data. Clinical response to TMS was associated with increases in features of MS-2, along with decreased metrics of MS-3. Nonresponders showed no significant changes in any microstate. Change in occurrence and coverage of both MS-2 (increased) and MS-3 (decreased) correlated with symptom change magnitude over the course of TMS treatment.

conclusionsWe identified EEG microstates associated with clinical improvement following a course of TMS therapy. Results suggest selective modulation of resting networks observable by EEG, which is inexpensive and easily acquired in the clinic setting.

Indexed as

Major Depressive DisorderTranscranial Magnetic StimulationBiomarkersBrainElectroencephalographyHumansNeural Networks, ComputerBiomarkersEEGMDDMicrostatesNeuromodulationTMS

Identifiers

PMID35051642
PMCPMC8957581
OpenAlexW4225612654

What OpenQuestion holds

Textmetadata
LicenceTDM
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.