Audio-Selektor (2 Recoder Endlosschleife)

The growing awareness of the con-tributory role which stress plays in causing illness has led to increased interest in various forms of `autogenic` training as a means of promoting relaxation. In particular, different types of `bio-feedback` circuits have become popular, the idea being that certain physiological functions (heart-beat, body temperature, brain ac-tivity) can be monitored and brought under the conscious control of the subject.