Evidence map›Paper›PMID 28158703›Full record

Trial reportSocial cognitive and affective neuroscience2017

Prefrontal cortex stimulation does not affect emotional bias, but may slow emotion identification.

Camilla L Nord, Sophie Forster, D Chamith Halahakoon, Ian S Penton-Voak, Marcus R Munafò, Jonathan P Roiser

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Social cognitive and affective neuroscience, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–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

10 citing papers in PubMed.

  1. Trial
  2. Neural predictors of treatment response to brain stimulation and psychological therapy in depression: a double-blind randomized controlled trial.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2019
    Trial
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. The effect of frontoparietal paired associative stimulation on decision-making and working memory.Cortex; a journal devoted to the study of the nervous system and behavior · 2019
    Article
  10. Review
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.

Camilla L NordInstitute of Cognitive Neuroscience, University College London, London, UK.
Sophie ForsterSchool of Psychology, University of Sussex, Brighton, UK.
D Chamith HalahakoonInstitute of Cognitive Neuroscience, University College London, London, UK.
Ian S Penton-VoakSchool of Experimental Psychology, University of Bristol, Bristol, UK.
Marcus R MunafòSchool of Experimental Psychology, University of Bristol, Bristol, UK.
Jonathan P RoiserInstitute of Cognitive Neuroscience, University College London, London, UK.

Funding

British Heart FoundationCancer Research UKMedical Research Council MC_UU_12013/6
6 · The paper itself

Abstract

Transcranial direct current stimulation (tDCS) has recently garnered attention as a putative depression treatment. However, the cognitive mechanisms by which it exerts an antidepressant effect are unclear: tDCS may directly alter 'hot' emotional processing biases, or alleviate depression through changes in 'cold' (non-emotional) cognitive function. Here, 75 healthy participants performed a facial emotion identification task during 20 minutes of anodal or sham tDCS over the left dorsolateral prefrontal cortex (DLPFC) in a double-blind, within-subject crossover design. A subset of 31 participants additionally completed a task measuring attentional distraction during stimulation. Compared to sham stimulation, anodal tDCS of the left DLPFC resulted in an increase in response latency across all emotional conditions. Bayesian analysis showed definitively that tDCS exerted no emotion-dependent effect on behaviour. Thus, we demonstrate that anodal tDCS produces a general, rather than an emotion-specific, effect. We also report a preliminary finding in the subset of participants who completed the distractibility task: increased distractibility during active stimulation correlated significantly with the degree to which tDCS slowed emotion identification. Our results provide insight into the possible mechanisms by which DLPFC tDCS may treat symptoms of depression, suggesting that it may not alter emotional biases, but instead may affect 'cold' cognitive processes.

Indexed as

Social PerceptionAdultAttentionBayes TheoremCross-Over StudiesDepressionDouble-Blind MethodEmotionsFacial ExpressionFemaleHealthy VolunteersHumansMalePrefrontal CortexReaction TimeTranscranial Direct Current StimulationdepressiondistractibilityDLPFCtDCS

Identifiers

PMID28158703
PMCPMC5460043

What OpenQuestion holds

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LicenceCC BY-NC
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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.