An assembly of devices intended to provide visual and/or auditory signals corresponding to the status of one or more of a patient's physiological functions, e.g., brain wave activity, muscle activity, blood pressure, skin temperature, balance, so that the patient can develop some degree of conscious control over a usually involuntarily function. This system will detect changes in the physiological functions that are outside of the normal awareness, amplify these signals, and provide this as feedback to the patient. It is used in, e.g., tension headache control, muscle relaxation, rehabilitation/training, behavioural research.
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