Evidence map›Paper›PMID 36831167›Full record

ArticleBiomedicines2023

Online Left-Hemispheric In-Phase Frontoparietal Theta tACS Modulates Theta-Band EEG Source-Based Large-Scale Functional Network Connectivity in Patients with Schizophrenia: A Randomized, Double-Blind, Sham-Controlled Clinical Trial.

Ta-Chuan Yeh, Cathy Chia-Yu Huang, Yong-An Chung, Sonya Youngju Park, Jooyeon Jamie Im, Yen-Yue Lin, Chin-Chao Ma, Nian-Sheng Tzeng, Hsin-An Chang

Open access · goldAbstract read
In one paragraph

Article in Biomedicines, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
1.4field-weighted citation impact, top 20% 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

8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 8 citations in OpenAlex.

  1. Pooled it
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  3. Article
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  7. Review
  8. Article
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 5 institutions in 2 countries.

Ta-Chuan YehDepartment of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan.
Cathy Chia-Yu HuangDepartment of Life Sciences, National Central University, Taoyuan 320317, Taiwan.
Yong-An ChungDepartment of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul 07345, Republic of Korea.ORCID 0000-0002-8422-1040
Sonya Youngju ParkDepartment of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul 07345, Republic of Korea.
Jooyeon Jamie ImDepartment of Psychology, Seoul National University, Seoul 08826, Republic of Korea.
Yen-Yue LinDepartment of Life Sciences, National Central University, Taoyuan 320317, Taiwan.ORCID 0000-0001-6885-2523
Chin-Chao MaDepartment of Psychiatry, Tri-Service General Hospital Beitou Branch, National Defense Medical Center, Taipei 112003, Taiwan.
Nian-Sheng TzengDepartment of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan.ORCID 0000-0001-5881-7089
Hsin-An ChangDepartment of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan.ORCID 0000-0001-5572-7109
Tri-Service General Hospital · TWCatholic University of Korea · KRNational Central University · TWSeoul National University · KRTri-Service General Hospital Beitou Branch · TW

Funding

Medical Affairs Bureau, Ministry of National Defense MND-MAB-D-111064 and MND-MAB-D-112065National Science and Technology Council of Taiwanese Government NSTC 111-2628-B-016 -004Tri-Service General Hospital TSGH-A-111002 and TSGH-A-112011
6 · The paper itself

Abstract

EEG studies indicated that schizophrenia patients had increased resting-state theta-band functional connectivity, which was associated with negative symptoms. We recently published the first study showing that theta (6 Hz) transcranial alternating current stimulation (tACS) over left prefrontal and parietal cortices during a working memory task for accentuating frontoparietal theta-band synchronization (in-phase theta-tACS) reduced negative symptoms in schizophrenia patients. Here, we hypothesized that in-phase theta-tACS can modulate theta-band large-scale networks connectivity in schizophrenia patients. In this randomized, double-blind, sham-controlled trial, patients received twice-daily, 2 mA, 20-min sessions of in-phase theta-tACS for 5 consecutive weekdays (n = 18) or a sham stimulation (n = 18). Resting-state electroencephalography data were collected at baseline, end of stimulation, and at one-week follow-up. Exact low resolution electromagnetic tomography (eLORETA) was used to compute intra-cortical activity. Lagged phase synchronization (LPS) was used to measure whole-brain source-based functional connectivity across 84 cortical regions at theta frequency (5-7 Hz). EEG data from 35 patients were analyzed. We found that in-phase theta-tACS significantly reduced the LPS between the posterior cingulate (PC) and the parahippocampal gyrus (PHG) in the right hemisphere only at the end of stimulation relative to sham (

Indexed as

electroencephalographyfrontoparietal theta couplingfunctional connectivitynegative symptomsschizophreniatranscranial alternating current stimulation

Identifiers

PMID36831167
PMCPMC9953127
OpenAlexW4321371975

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Registered trials

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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.