Volume 57, Issue 5 p. 633-644
Original Article

A randomized controlled trial into the effects of neurofeedback, methylphenidate, and physical activity on EEG power spectra in children with ADHD

Tieme W. P. Janssen

Corresponding Author

Tieme W. P. Janssen

Department of Clinical Neurospychology, VU University Amsterdam, Amsterdam, The Netherlands

Correspondence

Tieme Willem Pieter Janssen, Department of Clinical Neurospychology, VU University Amsterdam, Van der Boechorststraat 1, 1081BT, Amsterdam, The Netherlands; Email: [email protected]

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Marleen Bink

Marleen Bink

Department of Clinical Neurospychology, VU University Amsterdam, Amsterdam, The Netherlands

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Katleen Geladé

Katleen Geladé

Department of Clinical Neurospychology, VU University Amsterdam, Amsterdam, The Netherlands

Yulius Academy, Barendracht, The Netherlands

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Rosa van Mourik

Rosa van Mourik

Royal Dutch Kentalis, Utrecht, The Netherlands

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Athanasios Maras

Athanasios Maras

Yulius Academy, Barendracht, The Netherlands

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Jaap Oosterlaan

Jaap Oosterlaan

Department of Clinical Neurospychology, VU University Amsterdam, Amsterdam, The Netherlands

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First published: 08 January 2016
Citations: 46
Conflict of interest statement: No conflicts declared.

Abstract

Background

The clinical and neurophysiological effects of neurofeedback (NF) as treatment for children with ADHD are still unclear. This randomized controlled trial (RCT) examined electroencephalogram (EEG) power spectra before and after NF compared to methylphenidate (MPH) treatment and physical activity (PA) – as semi-active control group – during resting and active (effortful) task conditions to determine whether NF can induce sustained alterations in brain function.

Methods

Using a multicentre three-way parallel group RCT design, 112 children with a DSM-IV diagnosis of ADHD, aged between 7 and 13 years, were initially included. NF training consisted of 30 sessions of theta/beta training at Cz over a 10-week period. PA training was a semi-active control group, matched in frequency and duration. Methylphenidate was titrated using a double-blind placebo controlled procedure in 6 weeks, followed by a stable dose for 4 weeks. EEG power spectra measures during eyes open (EO), eyes closed (EC) and task (effortful) conditions were available for 81 children at pre- and postintervention (n = 29 NF, n = 25 MPH, n = 27 PA). Clinical trials registration: Train Your Brain? Exercise and Neurofeedback Intervention for ADHD, https://clinicaltrials.gov/show/;NCT01363544, Ref. No. NCT01363544.

Results

Both NF and MPH resulted in comparable reductions in theta power from pre- to postintervention during the EO condition compared to PA (ηp2 = .08 and .12). For NF, greater reductions in theta were related to greater reductions in ADHD symptoms. During the task condition, only MPH showed reductions in theta and alpha power compared to PA (ηp2 = .10 and .12).

Conclusions

This study provides evidence for specific neurophysiological effects after theta/beta NF and MPH treatment in children with ADHD. However, for NF these effects did not generalize to an active task condition, potentially explaining reduced behavioural effects of NF in the classroom.