Evidence map›Paper›PMID 31420949›Full record

ArticleCNS neuroscience & therapeutics2019

Scalp-to-cortex distance of left primary motor cortex and its computational head model: Implications for personalized neuromodulation.

Hanna Lu, Linda C W Lam, Yuping Ning

Open access · goldAbstract read
In one paragraph

Article in CNS neuroscience & therapeutics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% 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, 1 synthesis or guideline pooled it, 42 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

3 authors at 2 institutions in 2 countries.

Hanna LuDepartment of Psychiatry, The Chinese University of Hong Kong, Hong Kong, China.ORCID 0000-0002-9090-258X
Linda C W LamDepartment of Psychiatry, The Chinese University of Hong Kong, Hong Kong, China.
Yuping NingGuangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China.
Chinese University of Hong Kong · HKGuangzhou Medical University · CN

Funding

Smartphone-Based "Burst" Cognitive AssessmentsP01AG003991 · NIA · WASHINGTON UNIVERSITY · PI JOHN MORRIS · 1985 to 2026
$69.5M
The natural history of AB accumulation in preclinical ADP01AG026276 · NIA · WASHINGTON UNIVERSITY · PI MORRIS, JOHN · 2005 to 2025
$49.5M
NIA NIH HHS P01 AG003991NIA NIH HHS P01 AG026276
6 · The paper itself

Abstract

backgroundNon-invasive brain stimulation (NIBS) is increasingly used as a probe of function and therapeutics in experimental neuroscience and neurorehabilitation. Scalp-to-cortex distance (SCD), as a key parameter, has been shown to potentially impact on the electric field. This study aimed to examine the region-specific SCD and its relationship with cognitive function in the context of age-related brain atrophy.

methodsWe analyzed the SCD and cortical thickness (CT) of left primary motor cortex (M1) in 164 cognitively normal (CN) adults and 43 dementia patients drawn from the Open Access Series of Imaging Studies (OASIS). The degree of brain atrophy was measured by the volume of ventricular system. Computational head model was developed to simulate the impact of SCD on the electric field.

resultsIncreased SCD of left M1 was only found in dementia patients (P < .001). When considering CT, the ratio of SCD to CT (F = 27.41, P < .001) showed better differential value than SCD. The SCD of left M1 was associated with worse global cognition (r = -.207, P = .011) and enlarged third ventricle (r = .241, P < .001). The electric field was consequently reduced with the increased SCD across cognitively normal elderly and dementia groups.

conclusionsScalable distance measures, including SCD and CT, are markedly correlated with reduced electric field in dementia patients. The findings suggest that it is important to be aware of region-specific distance measures when conducting NIBS-based rehabilitation in individuals with brain atrophy.

Indexed as

Models, AnatomicAdultAgedAged, 80 and overCross-Sectional StudiesDementiaFemaleHumansImaging, Three-DimensionalMagnetic Resonance ImagingMaleMiddle AgedMotor CortexOrgan SizePrecision MedicineScalpcortical thicknessdementiaelectric fieldmorphometryneuromodulationprimary motor cortexscalp-to-cortex distancesimulation

Identifiers

PMID31420949
PMCPMC6834924
OpenAlexW2968067411

What OpenQuestion holds

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LicenceCC BY
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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.