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Biofeedback is a psychophysiological self-regulation therapeutic training approach used to help involuntary biological functions become more voluntary. Electronic instruments with small sensors pick up signals associated with functions in the body such as heart rate, respiration, blood pressure, electrodermal activity, electrical activity of the muscles, peripheral skin temperature, and so on. Feedback from the sensor is presented to the individual in a visual, auditory, or other sensory manner. Once feedback is received, the client is then guided or coached through ways to modify and control internal functions. This information can then be used to help the client know what necessary adjustments need to be made to improve overall health and functioning. Ideally, the body becomes its own feedback device, so individuals start feeling subtle ...

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