Editors' Introduction
This special issue continues the focus of the Spring 2019 issue on advances in instrumentation, software, and applications in biofeedback and neurofeedback. Here the articles will focus on the use of normative databases in neurofeedback assessment and treatment and the use of dynamic muscle assessment. In addition, Arnon Rolnick and Yossi Ehrenreich summarize issues in the infant's acquisition of self-knowledge through interactions with the mother.
Thomas Collura provides a review of the basic principles of the QEEG, the mathematical tools utilized to analyze cortical activation patterns, and the clinical value of well-informed use of QEEG. He reviews the