Your goal is to promote relaxation of the right upper trapez…
Your goal is to promote relaxation of the right upper trapezius in a patient with tension-type headaches using 2-channel biofeedback. You place both electrodes/channels on the upper trapezius with an “Above Tone” goal on both channels (i.e. a sound is heard if muscle activity exceeds the set threshold). Which of the following changes will increase the difficulty of achieving the biofeedback goal in this patient?