What is the role of biofeedback in rehabilitation?

• A. To heat tissues
• B. To provide real-time information on muscle activity to improve motor learning and neuromuscular control
• C. To measure joint angles with X-ray
• D. To deliver electrical stimulation

Answer: (B)

Biofeedback in rehabilitation uses real-time information about physiological signals, most commonly muscle activity, to guide motor learning and neuromuscular control. Through techniques like surface EMG biofeedback, sensors detect a muscle’s electrical activity and translate it into visual or auditory cues. This immediate feedback helps individuals learn to activate the correct muscles with proper timing and control, refine movement patterns, and reduce maladaptive co-activation or compensations. Over time, this supports retraining of motor patterns and functional performance, such as improving leg muscle activation after injury or stroke, or enhancing pelvic floor control.

It’s not about heating tissues (that would be thermotherapy), not about measuring joints with X-ray (imaging/diagnostic tools), and not about delivering electrical stimulation (electrostimulation). Those methods serve different purposes, whereas biofeedback centers on providing real-time muscle activity information to improve motor learning and neuromuscular control.