Evidence map›Paper›PMID 23467363›Full record

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

The mental cost of cognitive enhancement.

Teresa Iuculano, Roi Cohen Kadosh

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 78 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing 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

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

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Medial Frontal Theta Reduction Impairs Rule Switching via Prediction Error.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  7. Long-term use of tDCS-clinical and ethical considerations.Frontiers in human neuroscience · 2026
    Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Review
  13. Non-invasive brain stimulation and neuroenhancement.Clinical neurophysiology practice · 2022
    Review
  14. Review
  15. Article
  16. The Downsides of Cognitive Enhancement.The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry · 2021
    Article
  17. Article
  18. Article
  19. Article
  20. Article

18 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

2 authors.

Teresa IuculanoDepartment of Experimental Psychology, University of Oxford, Oxford OX1 3UD, United Kingdom, Institute of Cognitive Neuroscience, University College London, London WC1N 3AR, United Kingdom, and Stanford Cognitive and Systems Neuroscience Laboratory, Palo Alto, California 94304.
Roi Cohen Kadosh

Funding

Wellcome Trust 088378Wellcome Trust WT88378
6 · The paper itself

Abstract

Noninvasive brain stimulation provides a potential tool for affecting brain functions in the typical and atypical brain and offers in several cases an alternative to pharmaceutical intervention. Some studies have suggested that transcranial electrical stimulation (TES), a form of noninvasive brain stimulation, can also be used to enhance cognitive performance. Critically, research so far has primarily focused on optimizing protocols for effective stimulation, or assessing potential physical side effects of TES while neglecting the possibility of cognitive side effects. We assessed this possibility by targeting the high-level cognitive abilities of learning and automaticity in the mathematical domain. Notably, learning and automaticity represent critical abilities for potential cognitive enhancement in typical and atypical populations. Over 6 d, healthy human adults underwent cognitive training on a new numerical notation while receiving TES to the posterior parietal cortex or the dorsolateral prefrontal cortex. Stimulation to the the posterior parietal cortex facilitated numerical learning, whereas automaticity for the learned material was impaired. In contrast, stimulation to the dorsolateral prefrontal cortex impaired the learning process, whereas automaticity for the learned material was enhanced. The observed double dissociation indicates that cognitive enhancement through TES can occur at the expense of other cognitive functions. These findings have important implications for the future use of enhancement technologies for neurointervention and performance improvement in healthy populations.

Indexed as

Transcranial Magnetic StimulationAdultCognitionFemaleHumansLearningMaleMathematicsNeuropsychological TestsParietal LobePrefrontal CortexReaction TimeTask Performance and AnalysisYoung Adult

Identifiers

PMID23467363
PMCPMC3672974

What OpenQuestion holds

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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.