Evidence map›Paper›PMID 23699515›Full record

Trial reportThe Journal of neuroscience : the official journal of the Society for Neuroscience2013

The aging motor system as a model for plastic changes of GABA-mediated intracortical inhibition and their behavioral relevance.

Kirstin-F Heise, Maximo Zimerman, Julia Hoppe, Christian Gerloff, Karl Wegscheider, Friedhelm C Hummel

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

83 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. A meta-analysis of the effects of aging on motor cortex neurophysiology assessed by transcranial magnetic stimulation.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2016
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  6. tDCS-Induced Modulation of GABA Levels and Resting-State Functional Connectivity in Older Adults.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
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23 more citing papers are in PubMed but not listed here.

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

6 authors.

Kirstin-F HeiseBrain Imaging and NeuroStimulation Laboratory, Department of Neurology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
Maximo Zimerman
Julia Hoppe
Christian Gerloff
Karl Wegscheider
Friedhelm C Hummel

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since GABAA-mediated intracortical inhibition has been shown to underlie plastic changes throughout the lifespan from development to aging, here, the aging motor system was used as a model to analyze the interdependence of plastic alterations within the inhibitory motorcortical network and level of behavioral performance. Double-pulse transcranial magnetic stimulation (dpTMS) was used to examine inhibition by means of short-interval intracortical inhibition (SICI) of the contralateral primary motor cortex in a sample of 64 healthy right-handed human subjects covering a wide range of the adult lifespan (age range 20-88 years, mean 47.6 ± 20.7, 34 female). SICI was evaluated during resting state and in an event-related condition during movement preparation in a visually triggered simple reaction time task. In a subgroup (N = 23), manual motor performance was tested with tasks of graded dexterous demand. Weak resting-state inhibition was associated with an overall lower manual motor performance. Better event-related modulation of inhibition correlated with better performance in more demanding tasks, in which fast alternating activation of cortical representations are necessary. Declining resting-state inhibition was associated with weakened event-related modulation of inhibition. Therefore, reduced resting-state inhibition might lead to a subsequent loss of modulatory capacity, possibly reflecting malfunctioning precision in GABAAergic neurotransmission; the consequence is an inevitable decline in motor function.

Indexed as

AdultAgedAged, 80 and overAgingAnalysis of VarianceElectromyographyEvoked Potentials, MotorFemaleFunctional LateralityHandHumansLinear ModelsMaleMiddle AgedMotor CortexNeural Inhibition

Identifiers

PMID23699515
PMCPMC6705012

What OpenQuestion holds

Textmetadata
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.