Transpersonal Psychology: Altered States of Consciousness, Biofeedback, and Neurotechnology

This book is a must-read for a transpersonal psychologist. Transpersonal psychology has proposed the use of altered states of consciousness as a tool to explore the inner self of the individual. There are many books that discuss several techniques to reach altered states and how to integrate them with transpersonal therapy. However, the main contribution of this book is the use of biofeedback and neurofeedback to measure these states and the use of neurotechnology with sound frequency to induce these states.