Control of Alpha Rhythm (8–13 Hz) Using Neurofeedback

Abstract

Alpha is a prominent rhythm occurring between 8 and 13 Hz
in brain signals that is often linked to a relaxed mental state. Some studies
have shown that individuals can learn to control their own alpha
rhythm if provided with a contingent feedback. However, investigations
till date in alpha neurofeedback have provided contrasting views
regarding the enhancement of alpha power. In this review, we discuss
various aspects of this controversy and highlight some issues with past
approaches of neurofeedback driven alpha enhancement. In particular,
we discuss possible modifications in future investigations which would
address some of the concerns.