These parts are contained in a case 400x230x145mm weighing about 2.6kg. Power for the apparatus comes from a separate medical-grade unit connected to the local main power supply, weighing about 1.1kg. Each of the two Distribution Boxes has five sockets for sensors and five for standard stereo headphones, the pairs being numbered to correspond to zones on the control panel. Each user's sensors and headphones are plugged into one pair of sockets. This arrangement avoids a tangle of twenty wires encircling the person at the controls.
References See our datasheets on books and supporting information on biofeedback.
C Patel et al. Controlled trial of biofeedback-aided behavioural methods in reducing mild hypertension . The instrument is made up of circuits used in the Model Q Relaxometers and the specification is therefore similar. Silvered Velcro attached with Velcro. Mixed cable lengths plug into Distribution Boxes.