biofeedback
🇺🇸
/ˌbaɪəʊˈfiːdbæk/
🇬🇧
/ˌbaɪəʊˈfiːdbæk/
a technique where electronic devices help you learn to control your body's functions, like your heart rate, that you usually can't control consciously
The therapist used biofeedback to help the patient learn to control their stress levels.