Contribution of transcranial direct current stimulation on inhibitory control to assess the neurobiological aspects of attention deficit hyperactivity disorder: randomized controlled trial

Camila Cosmo, Abrahão Fontes Baptista, Eduardo Pondé de Sena, Camila Cosmo, Abrahão Fontes Baptista, Eduardo Pondé de Sena

Abstract

Background: The applicability of transcranial direct current stimulation (tDCS) in individuals with attention deficit hyperactivity disorder (ADHD) has not yet been investigated. This low-cost, non-invasive, and safe technique optimized to modulate the inhibitory response might be a useful treatment option for those affected by this condition.

Objective: The aim of this single center, parallel, randomized, double-blinded, sham-controlled trial is to investigate the efficacy of transcranial direct current stimulation over the prefrontal cortex on the modulation of inhibitory control in adults with attention deficit hyperactivity disorder.

Methods: A total of 60 individuals will be divided into 2 groups by block randomization to receive active or sham stimulation. Anodal stimulation over the left dorsolateral prefrontal cortex will be applied at 1 mA during a single 20-minute session. Before and after interventions, subjects will perform 2 go/no go tasks and the brain electrical activity will be recorded by electroencephalogram (EEG) with 32 channels, according to the 10-20 international EEG system.

Results: The trial began in May 2013 and we are currently performing the statistical analysis for the secondary outcomes.

Conclusions: The findings from this study will provide preliminary results about the role of prefrontal cortex activation through tDCS on ADHD patients.

Trial registration: Clinicaltrials.gov NCT01968512; https://ichgcp.net/clinical-trials-registry/NCT01968512 (Archived by WebCite at www.webcitation.org/6YMSW2tkD).

Keywords: Attention deficit hyperactivity disorder; inhibitory control; transcranial direct current stimulation.

Conflict of interest statement

Conflicts of Interest: None declared.

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