One size fits all? Slow cortical potentials neurofeedback: a review

Area of Science:

• Neuroscience
• Psychiatry
• Biofeedback

Background:

• Attention-Deficit/Hyperactivity Disorder (ADHD) is a prevalent neurodevelopmental disorder.
• Current treatments for ADHD have limitations, necessitating exploration of alternative therapies.
• Slow Cortical Potentials (SCP) neurofeedback offers a potential non-pharmacological intervention targeting neurophysiological deficits.

Purpose of the Study:

• To systematically review published studies on SCP neurofeedback for ADHD treatment.
• To analyze the neurophysiological rationale, study design, protocols, outcomes, and limitations of SCP neurofeedback.
• To evaluate the efficacy of SCP neurofeedback in both pediatric and adult ADHD populations.

Main Methods:

• Comprehensive literature search of PubMed, MEDLINE, ERIC, and Google Scholar.
• Inclusion of six studies (six publications) focusing on SCP neurofeedback for ADHD.
• Analysis of studies involving children and adults diagnosed with ADHD according to DSM-IV criteria.

Main Results:

• SCP neurofeedback protocols involve specific electrode placement (Cz), bidirectional regulation, and reward systems.
• Demonstrated learning of SCP self-regulation and significant reduction in core ADHD symptoms (moderate to large effect sizes).
• Observed enhancements in event-related potentials and electroencephalogram components, with neurophysiological variables predicting outcomes.

Conclusions:

• SCP neurofeedback is an efficacious and standardized treatment for ADHD.
• This method addresses both behavioral and neurophysiological deficits associated with ADHD.
• Further research is needed to elucidate specific versus nonspecific treatment effects.