Evidence map›Paper›PMID 35815029›Full record

ArticleFrontiers in psychiatry2022

rTMS Therapy Reduces Hypofrontality in Patients With Depression as Measured by fNIRS.

Yasuo Kawabata, Shin-Ichi Imazu, Koichi Matsumoto, Katsunori Toyoda, Makoto Kawano, Yoichiro Kubo, Shinya Kinoshita, Yoshitaka Nishizawa, Tetsufumi Kanazawa

Open access · goldAbstract read
In one paragraph

Article in Frontiers in psychiatry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

12 citing papers in PubMed, 21 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 2 institutions in 3 countries.

Yasuo KawabataDepartment of Neuropsychiatry, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Shin-Ichi ImazuDepartment of Neuropsychiatry, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Koichi MatsumotoDepartment of Neuropsychiatry, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Katsunori ToyodaDepartment of Neuropsychiatry, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Makoto KawanoDepartment of Neuropsychiatry, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Yoichiro KuboDepartment of Neuropsychiatry, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Shinya KinoshitaDepartment of Neuropsychiatry, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Yoshitaka NishizawaDepartment of Neuropsychiatry, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Tetsufumi KanazawaDepartment of Neuropsychiatry, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Osaka University of Pharmaceutical Sciences · JPUniversity of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Multichannel functional near-infrared spectroscopy (fNIRS) is a tool used to capture changes in cerebral blood flow. A consistent result for depression is a decrease in blood flow in the frontal cortex leading to hypofrontality, which indicates multidomain functional impairment. Repetitive transcranial magnetic stimulation (rTMS) and elective convulsive therapy (ECT) are alternatives to antidepressant drugs for the treatment of depression but the underlying mechanism is yet to be elucidated. The aim of the current study was to evaluate cerebral blood flow using fNIRS following rTMS treatment in patients with depression. The cerebral blood flow of 15 patients with moderate depression after rTMS treatment was measured using fNIRS. While there was clear hypofrontality during pre-treatment (5 ± 2.5), a notable increase in oxygenated hemoglobin was observed after 30 sessions with rTMS (50 ± 15). This increased blood flow was observed in a wide range of channels in the frontal cortex; however, the centroid values were similar between the treatments. Increased blood flow leads to the activation of neuronal synapses, as noted with other neuromodulation treatments such as electroconvulsive therapy. This study describes the rTMS-induced modulation of blood oxygenation response over the prefrontal cortex in patients with depression, as captured by fNIRS. Future longitudinal studies are needed to assess cerebral blood flow dynamics during rTMS treatment for depression.

Indexed as

cerebrovascular circulationdepressionfunctional near-infrared spectroscopyoxyhemoglobinsprefrontal cortexrepetitive transcranial magnetic stimulation

Identifiers

PMID35815029
PMCPMC9257165
OpenAlexW4283380953

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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.