Fig. 2From: Evaluating the potential of respiratory-sinus-arrhythmia biofeedback for reducing physiological stress in adolescents with autism: study protocol for a randomized controlled trialOverview placement of physiological sensors. Set-up of the biofeedback system. A NeXus-10 MKII device. B Sensors for hand temperature (n=1) and skin conductance (n=2). C Sensors concerning heart rate (n=3) and breathing frequency (n=1)Back to article page