Final answer:
EMG biofeedback is a technique that measures the electrical activity of muscles, allowing individuals to gain control over involuntary processes, and is used in various medical treatments and research.
Step-by-step explanation:
EMG biofeedback measures the electrical activity of muscle. This technique is part of a biofeedback therapy developed in the early 1970s that uses electronic equipment to measure a person's neuromuscular and autonomic activity. The feedback from EMG is often provided in the form of visual or auditory signals, enabling individuals to gain voluntary control over involuntary bodily processes.
The use of EMG biofeedback has been applied successfully in various medical conditions, including those related to stress and muscle tension. By measuring and displaying real-time data about muscle activity, it aids in the treatment and research for conditions like tension headaches, high blood pressure, and phobias. Other biofeedback techniques include measuring brain activity with EEG, which is helpful for sleep disorders.