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  • Title: [Apparatus for heart rate biofeedback training].
    Author: Saito I, Nikawa H, Yamakawa M, Okuse S, Murao M.
    Journal: Hokkaido Igaku Zasshi; 1985 Jul; 60(4):571-7. PubMed ID: 4054824.
    Abstract:
    Present study was undertaken to develop an apparatus for heart rate biofeedback training in clinical basis. The plethysmographic transducer was used for detection of pulses. The main part of this apparatus is composed of three systems in function, that is, an audiovisual feedback system of heart rate in analogue and digital manners, a reinforcement system of exteroceptive stimuli of light and/or sound and operant biofeedback system. Experimental inspection of the apparatus showed no problem except a case of angiospasm of fingers. Clinical trials revealed that this apparatus was available to the biofeedback control of heart beats in both normal volunteers and some cardiac patients.
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