Evidence map›Paper›PMID 25665871›Full record

ArticleExperimental brain research2015

Exogenously induced brain activation regulates neuronal activity by top-down modulation: conceptualized model for electrical brain stimulation.

Lauren Naomi Spezia Adachi, Alexandre Silva Quevedo, Andressa de Souza, Vanessa Leal Scarabelot, Joanna Ripoll Rozisky, Carla de Oliveira, Paulo Ricardo Marques Filho, Liciane Fernandes Medeiros, Felipe Fregni, Wolnei Caumo and 1 more

Abstract read
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In one paragraph

Article in Experimental brain research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 8% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

  1. Pooled it
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  13. Transcranial Electrical Brain Stimulation in Alert Rodents.Journal of visualized experiments : JoVE · 2017
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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

11 authors at 4 institutions in 3 countries.

Lauren Naomi Spezia AdachiPost-Graduate Program in Medical Sciences, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Alexandre Silva Quevedo
Andressa de Souza
Vanessa Leal Scarabelot
Joanna Ripoll Rozisky
Carla de Oliveira
Paulo Ricardo Marques Filho
Liciane Fernandes Medeiros
Felipe Fregni
Wolnei Caumo
Iraci L S Torres
Hospital de Clínicas de Porto Alegre · BRUniversidade Federal do Rio Grande do Sul · BRHarvard University · USUniversidade do Porto · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Physiological and exogenous factors are able to adjust sensory processing by modulating activity at different levels of the nervous system hierarchy. Accordingly, transcranial direct current stimulation (tDCS) may use top-down mechanisms to control the access for incoming information along the neuroaxis. To test the hypothesis that brain activation induced by tCDS is able to initiate top-down modulation and that chronic stress disrupts this effect, 60-day-old male Wistar rats (n = 78) were divided into control; control + tDCS; control + sham-tDCS; stress; stress + tDCS; and stress + sham-tDCS. Chronic stress was induced using a restraint stress model for 11 weeks, and then, the treatment was applied over 8 days. BDNF levels were used to assess neuronal activity at spinal cord, brainstem, and hippocampus. Mechanical pain threshold was assessed by von Frey test immediately and 24 h after the last tDCS-intervention. tDCS was able to decrease BDNF levels in the structures involved in the descending systems (spinal cord and brainstem) only in unstressed animals. The treatment was able to reverse the stress-induced allodynia and to increase the pain threshold in unstressed animals. Furthermore, there was an inverse relation between pain sensitivity and spinal cord BDNF levels. Accordingly, we propose the addition of descending systems in the current brain electrical modulation model.

Indexed as

Analysis of VarianceAnimalsBrainBrain-Derived Neurotrophic FactorDisease Models, AnimalElectric StimulationHyperalgesiaMaleNeural PathwaysNeuronsPainPain MeasurementPain ThresholdRatsRats, WistarRestraint, PhysicalBrain-Derived Neurotrophic Factor

Identifiers

PMID25665871
OpenAlexW1976796131

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.