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A single tDCS session can enhance numerical competence.

Maryam Hussain1, Nick J Davis2, Yael Benn2

  • 1School of Health Sciences, University of Manchester, Manchester, M13 9PL, United Kingdom; Department of Psychology, Manchester Metropolitan University, Manchester, M15 6GX, United Kingdom.

Neuropsychologia
|December 16, 2023
PubMed
Summary
This summary is machine-generated.

A single session of transcranial Direct Current Stimulation (tDCS) improved numerical skills in healthy adults. This approach offers a promising, accessible intervention for numeracy difficulties, potentially benefiting those with mobility issues.

Keywords:
Number line taskNumerical cognitionNumerical enhancementNumerical stroop taskTranscranial direct current stimulation (tDCS)

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Area of Science:

  • Cognitive Neuroscience
  • Neurorehabilitation

Background:

  • Numeracy skills are crucial, yet interventions for difficulties are limited.
  • Transcranial Direct Current Stimulation (tDCS) shows potential for improving numerical skills.
  • Current tDCS protocols require multiple sessions, limiting accessibility and increasing risks.

Purpose of the Study:

  • To investigate if a single tDCS session followed by self-practice can enhance numerical skills.
  • To assess the feasibility of a simplified tDCS intervention for numeracy improvement.

Main Methods:

  • Nineteen healthy adults received either active tDCS (anodal right, cathodal left parietal lobes) or sham stimulation.
  • Participants implicitly learned symbol-magnitude associations.
  • Numerical proficiency and automaticity were measured using number-to-space and numerical Stroop tasks.

Main Results:

  • Single-session tDCS significantly improved accuracy on number-to-space tasks.
  • No significant effect was observed on the numerical Stroop task's congruity effect, suggesting automaticity requires more practice.
  • Results indicate potential for tDCS in enhancing specific numerical abilities.

Conclusions:

  • A single session of tDCS, combined with self-practice, can enhance numerical skills.
  • This method presents a more accessible and potentially safer alternative to multi-session tDCS protocols.
  • Further research is warranted to explore the long-term effects and applicability to clinical populations.