Most people who have even heard of biofeedback think you need an enormous lab with expensive equipment to “do it.” No so! Biofeedback has emerged in the last decade or so as a particular application of a much broader perspective called cybernetics. Cybernetics attempts to develop a theory of communication and control in machines and in living organisms (Weiner, 1954). The word is from the Greek kybernetes, meaning steersman. It was chosen to describe the basic concept of a feedback mechanism. Using this concept, the central nervous system no longer remains a self-contained organ receiving sensory information and contracting the muscles. In fact, some of its most characteristic activities are explainable only as circular processes traveling from the nervous system into the muscles and reentering the nervous system through the senses.
KeywordsCircular Flow Feedback Device Electronic Stethoscope Sensitive Feedback Bathroom Scale
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