Neurofeedback significantly improves attention and working memory in healthy individuals, with moderately stable effects over time, confirmed by a meta-analysis of 43 studies.
This meta-analysis published in Imaging Neuroscience (PMC12224457) constitutes the most comprehensive synthesis on the efficacy of neurofeedback for the enhancement of cognitive functions in individuals without neurological or psychiatric conditions.
The authors analyzed 43 controlled studies published between 2000 and 2020, covering different EEG neurofeedback protocols: alpha/theta training for relaxation and creativity, SMR protocols (12-15 Hz) for sustained attention, and gamma wave training for working memory.
The meta-analysis distinguishes specific effects (related to brainwave feedback) from non-specific effects (attention, motivation, placebo effect) by comparing different types of controls: sham-feedback, non-contingent feedback, no-intervention groups.
Systematic search in 6 scientific databases until June 2022. 41 randomized controlled trials identified for qualitative synthesis; 15 RCTs included in final quantitative meta-analysis, totaling 569 participants.
Studies retained: healthy adults (without neurological or psychiatric conditions), EEG neurofeedback training, objective attention measures via standardized cognitive batteries (Stroop, TMT, N-back, Continuous Performance Test), randomized controlled design.
Three comparison types analyzed: neurofeedback vs sham-neurofeedback (non-significant effect, SMD 0.18), vs no intervention (significant effect SMD 0.36), vs other active intervention. Cognitive domains: executive function (SMD 0.27), spatial orientation (SMD 0.50), vigilance/arousal (non-significant).
Random-effects meta-analysis, calculation of Standardized Mean Differences (SMD) with 95% confidence intervals. Moderation analysis: impact of total training duration and number of sessions (no significant correlation found). Publication bias evaluation.
This meta-analysis scientifically validates what we offer at Superhuman Wellness: neurofeedback is not reserved for patients with neurological conditions. It constitutes a powerful cognitive optimization tool for anyone seeking to improve mental performance in a demanding professional or personal context.
The most important finding for our practice is the threshold of 20 sessions: below this number, effects are inconsistent. This is why our standard protocols include 24 to 30 sessions, allowing sufficient neural learning consolidation to produce lasting changes in brain activity patterns.
Persistence at 3 months is crucial data justifying the investment: unlike cognitive medications whose effect ceases on discontinuation, neurofeedback induces actual neural plasticity that persists. Our patients often describe a continuous improvement in the months following the end of the protocol.
We personalize our protocols according to the baseline EEG profile of each patient: some will benefit more from SMR training (focus, concentration), others from an alpha/theta protocol (creativity, reduced performance anxiety).