Evidence map›Paper›PMID 24508649›Full record

Trial reportNeuroImage2014

Re-wiring the brain: increased functional connectivity within primary somatosensory cortex following synchronous co-activation.

Rishma Vidyasagar, Stephen E Folger, Laura M Parkes

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in NeuroImage, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.7field-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

13 citing papers in PubMed, 27 citations in OpenAlex.

  1. Evidence for frequency-dependent cortical plasticity in the human brain.Proceedings of the National Academy of Sciences of the United States of America · 2017
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  11. Investigating the Stability of Fine-Grain Digit Somatotopy in Individual Human Participants.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016
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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 3 institutions in 2 countries.

Rishma VidyasagarCentre for Imaging Sciences, Institute of Population Health, University of Manchester, M13 9PT, UK; Magnetic Resonance Imaging and Analysis Research Centre (MARIARC), University of Liverpool, L69 3GE, UK. Electronic address: rishma.vidyasagar@manchester.ac.uk.
Stephen E FolgerDepartment of Physical Therapy Education, Elon University, Campus Box 2085, Elon, NC 27244-2085, USA.
Laura M ParkesCentre for Imaging Sciences, Institute of Population Health, University of Manchester, M13 9PT, UK.
Elon University · USEngineering and Physical Sciences Research Council · GBUniversity of Manchester · GB

Funding

Medical Research Council G0501110Medical Research Council G1100781
6 · The paper itself

Abstract

The primary somatosensory cortex shows precise topographical organisation, but can be quickly modified by alterations to sensory inputs. Temporally correlated sensory inputs to the digits can result in the merging of digit representations on the cortical surface. Underlying mechanisms driving these changes are unclear but the strengthening of intra-cortical synaptic connections via Hebbian mechanisms has been suggested. We use fMRI measures of temporal coherence to infer alterations in the relative strength of neuronal connections between digit regions 2 and 4 following 3 hours of synchronous and asynchronous co-activation. Following synchronous co-activation we find a 20% increase in temporal coherence of the fMRI signal (p=0.0004). No significant change is seen following asynchronous co-activation suggesting that temporal coincidence between the two digit inputs during co-activation is driving this coherence change. In line with previous work we also find a trend towards reduced separation of the digit representations following synchronous co-activation and significantly increased separation for the asynchronous case. Increased coherence is significantly correlated with reduced digit separation for the synchronous case. This study shows that passive synchronous stimulation to the digits strengthens the underlying cortical connections between the digit regions in only a few hours, and that this mechanism may be related to topographical re-organisation.

Indexed as

AdultConnectomeCortical SynchronizationEvoked Potentials, SomatosensoryFemaleFingersHumansMagnetic Resonance ImagingMaleNerve NetNeuronal PlasticityPhysical StimulationSomatosensory CortexTouchBOLDCoherenceCortical reorganisationfMRIPlasticitySomatotopy

Identifiers

PMID24508649
PMCPMC4010953
OpenAlexW2089001497

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.