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The techniques of neurofeedback (NF) enable a patient to train him or herself to self-regulate a single measure of brain activity, which can be measured through EEG. EEG-NF (EEG and neurofeedback) training aims to achieve self-control over specific aspects of electrical brain activity through real-time feedback and positive reinforcement and implement these self-regulation skills in daily life. The aim of this study was to focus on recent major developments in the field of NF and ADHD.
The Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) recommendations are used to undertake the search and analysis of the international scientific literature. Studies were included if they met the following criteria:
Design: randomized controlled trials (RCT).
Intervention: standard protocol EEG-NF with Theta/Beta Ratio training—TBR (or likely to standard TBR training) or Slow Cortical Potentials (SCP) training.
Control group: semi-active (i.e., cognitive remediation and EMG-biofeedback) and sham-NF.
Participants: participants with an established clinical diagnosis of ADHD thanks to DSM or CIM criteria.
Evaluation of ADHD severity based on a validated scale with probably blinded assessment (teacher assessment) data available.
No secondary analyses of previously included trials.
Five identified studies met the eligibility criteria.
263 patients with ADHD were included, 146 patients were trained with EEG-NF.
On parent assessment (probably unblinded assessment), the overall ADHD score (SMD = −0.49 [−0.74, −0.24]), the inattention score (SMD = −0.46 [−0.76, −0.15]) and the hyperactivity/impulsivity score (SMD = −0.34 [−0.59, −0.09]) were significantly improved in patients receiving EEG-NF compared to controls.
On teacher assessment (probably blinded assessment), only the inattention score was significantly improved in patients receiving EEG-NF compared to controls (SMD = −0.30 [−0.58, −0.03]).
A significant correlation was found between the ES on the overall ADHD score assessed by teacher and percentage of patient treated with methylphenidate (rs[5] = 0.9, p = 0.037).
This meta-analysis of EEG-NF in children with ADHD highlights improvement in the inattention dimension of ADHD symptoms. Future investigations should pay greater attention to adequately blinded studies and EEG-NF protocols that carefully control the implementation and embedding of training.
Studeren in het buitenland, stagelopen of onderzoek doen? Check welke verzekeringen voor jou van toepassing zijn via de JoHo Insurances Foundation, of bereid je vertrek naar het buitenland voor
Study or work abroad: check your insurance options
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