Evidence map›Paper›PMID 34826627›Full record

ArticleBrain stimulation

Sex difference in tDCS current mediated by changes in cortical anatomy: A study across young, middle and older adults.

Sagarika Bhattacharjee, Rajan Kashyap, Alicia M Goodwill, Beth Ann O'Brien, Brenda Rapp, Kenichi Oishi, John E Desmond, S H Annabel Chen

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 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 6% 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it, 71 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

8 authors at 3 institutions in 2 countries.

Sagarika BhattacharjeePsychology, School of Social Sciences, Nanyang Technological University, Singapore. Electronic address: bhattacharya.sagarika7@gmail.com.
Rajan KashyapCentre for Research and Development in Learning (CRADLE), Nanyang Technological University, Singapore. Electronic address: rajankashyap6@gmail.com.
Alicia M GoodwillCentre for Research and Development in Learning (CRADLE), Nanyang Technological University, Singapore; Physical Education and Sports Science Academic Group, National Institute of Education, Nanyang Technological University, Singapore. Electronic address: alicia.goodwill@nie.edu.sg.
Beth Ann O'BrienCentre for Research in Child Development (CRCD), National Institute of Education, Singapore. Electronic address: obrienbeth1@gmail.com.
Brenda RappThe Johns Hopkins University, Krieger School of Arts and Sciences, Baltimore, United States. Electronic address: brapp1@jhu.edu.
Kenichi OishiThe Johns Hopkins University School of Medicine, Baltimore, United States. Electronic address: koishi@mri.jhu.edu.
John E DesmondThe Johns Hopkins University School of Medicine, Baltimore, United States. Electronic address: jdesmon2@jhmi.edu.
S H Annabel ChenPsychology, School of Social Sciences, Nanyang Technological University, Singapore; Centre for Research and Development in Learning (CRADLE), Nanyang Technological University, Singapore; Lee Kong Chian School of Medicine (LKC Medicine), Nanyang Technological University, Singapore. Electronic address: annabelchen@ntu.edu.sg.
Nanyang Technological University · SGJohns Hopkins University · USClinical Nutrition Research Centre · SG

Funding

Sleep and Circadian Dysfunction, Brain and Neurobehavioral Development in AutismP50HD103538 · NICHD · HUGO W. MOSER RES INST KENNEDY KRIEGER · PI Stewart H Mostofsky · 2020 to 2026
$9.9M
NICHD NIH HHS P50 HD103538
6 · The paper itself

Abstract

introductionThe observed variability in the effects of transcranial direct current stimulation (tDCS) is influenced by the amount of current reaching the targeted region-of-interest (ROI). Age and sex might affect current density at target ROI due to their impact on cortical anatomy. The present tDCS simulation study investigates the effects of cortical anatomical parameters (volumes, dimension, and torque) on simulated tDCS current density in healthy young, middle-aged, and older males and females. METHODOLOGY: Individualized head models from 240 subjects (120 males, 18-87 years of age) were used to identify the estimated current density (2 mA current intensity, 25 cm

resultsFor both tDCS montages, females in the older age group received higher current density than their male counterparts at the target ROIs. No sex differences were observed in the middle-aged group. Males in the younger age group had a higher current density than females, only for the parietal montage. Across all age groups, CSF, and grey matter volumes significantly predicted the current intensity estimated at the target sites. In the older age group only, brain-torque was a significant mediator of the sex difference.

conclusionsOur findings demonstrate the presence of sex differences in the simulated tDCS current density, however this pattern differed across age groups and stimulation locations. Future studies should consider influence of age and sex on individual cortical anatomy and tailor tDCS stimulation parameters accordingly.

Indexed as

Transcranial Direct Current StimulationAgedBrainFemaleHeadHumansMagnetic Resonance ImagingMaleMiddle AgedSex CharacteristicsCortical volumeSimulated currenttDCS currentTorque

Identifiers

PMID34826627
PMCPMC9041842
OpenAlexW3217401378

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.