A machine called an electromyograph (EMG) uses sensors to measure muscle tightening. ![]() When you are relaxed, your heart rate may decrease. A sensor also can be placed on your finger to measure your heart rate. These pads are connected to an electrocardiogram (ECG) that measures your heart rate and how your heart rate changes. In this type of biofeedback, pads are placed on your chest, lower trunk or wrists. With biofeedback training, you can see a change in the brain waves that improve your health. There are certain brain waves that show different mental states, such as relaxation, wakefulness and sleep. During this type of biofeedback, an electroencephalograph (EEG) uses scalp pads to monitor your brain waves. ![]() You can control your breathing and feel better. Sensors on the bands check your breathing rate and patterns. ![]() During breathing biofeedback, bands are placed around your stomach and chest. Your health care provider might use different kinds of biofeedback depending on your health problems and goals.
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