QEEG-Guided Neurofeedback for Autism: Clinical Observations and Outcomes
During the 40-plus-year history of EEG biofeedback, now also called neurofeedback (NF), the approach has been used clinically to address attentional problems in attention deficit-hyperactivity disorder (ADHD). Initially, NF was based on the theta/beta ratio, which was measured with eyes open, at the vertex, or the Cz electrode in the International 10–20 Electrode placement system. Generally, the early NF work was based on enhancing beta and reducing the slower theta content (Monastra et al. 1999).