Evidence map›Paper›PMID 33991165›Full record

ArticleHuman brain mapping2021

Transcranial magnetic stimulation alters multivoxel patterns in the absence of overall activity changes.

Farshad Rafiei, Martin Safrin, Martijn E Wokke, Hakwan Lau, Dobromir Rahnev

Open access · goldAbstract read
In one paragraph

Article in Human brain mapping, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

10 citing papers in PubMed, 16 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Article
  5. Causal mapping of human brain function.Nature reviews. Neuroscience · 2022
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
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

5 authors at 4 institutions in 1 country.

Farshad RafieiSchool of Psychology, Georgia Institute of Technology, Atlanta, Georgia, USA.ORCID 0000-0001-9636-4922
Martin SafrinSchool of Medicine, University of California Los Angeles, Los Angeles, California, USA.
Martijn E WokkePrograms in Psychology and Biology, The Graduate Center of the City University of New York, New York, New York, USA.
Hakwan LauDepartment of Psychology, University of California Los Angeles, Los Angeles, California, USA.
Dobromir RahnevSchool of Psychology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Georgia Institute of Technology · USCalifornia NanoSystems Institute · USThe Graduate Center, CUNY · USUniversity of California, Los Angeles · US

Funding

Uncovering the Architecture of MetacognitionR01MH119189 · NIMH · GEORGIA INSTITUTE OF TECHNOLOGY · PI RAHNEV, DOBROMIR · 2020 to 2024
$1.5M
Improving behavior with TMS: A concurrent TMS-fMRI approachR21MH122825 · NIMH · GEORGIA INSTITUTE OF TECHNOLOGY · PI RAHNEV, DOBROMIR · 2020 to 2021
$434k
NIMH NIH HHS R01 MH119189NIMH NIH HHS R21 MH122825
6 · The paper itself

Abstract

Transcranial magnetic stimulation (TMS) has become one of the major tools for establishing the causal role of specific brain regions in perceptual, motor, and cognitive processes. Nevertheless, a persistent limitation of the technique is the lack of clarity regarding its precise effects on neural activity. Here, we examined the effects of TMS intensity and frequency on concurrently recorded blood-oxygen-level-dependent (BOLD) signals at the site of stimulation. In two experiments, we delivered TMS to the dorsolateral prefrontal cortex in human subjects of both sexes. In Experiment 1, we delivered a series of pulses at high (100% of motor threshold) or low (50% of motor threshold) intensity, whereas, in Experiment 2, we always used high intensity but delivered stimulation at four different frequencies (5, 8.33, 12.5, and 25 Hz). We found that the TMS intensity and frequency could be reliably decoded using multivariate analysis techniques even though TMS had no effect on the overall BOLD activity at the site of stimulation in either experiment. These results provide important insight into the mechanisms through which TMS influences neural activity.

Indexed as

Image Processing, Computer-AssistedTranscranial Magnetic StimulationAdultDorsolateral Prefrontal CortexFemaleHumansMaleMultivariate AnalysisYoung AdultBOLDconcurrent TMS-fMRIMVPAPFCTMS

Identifiers

PMID33991165
PMCPMC8288086
OpenAlexW3163732710

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.