Electrodiagnosis (EDX) is a method of medical diagnosis that obtains information about diseases by passively recording the electrical activity of body parts (that is, their natural electrophysiology) or by measuring their response to external electrical stimuli (evoked potentials). The most widely used methods of recording spontaneous electrical activity are various forms of<unk>  testing (electrography) such as electrocardiography (ECG), electroencephalography (EEG), and electromyography (EMG).<unk>  (also EDX) is a medical subspecialty of neurology, clinical neurophysiology, cardiology, and physical<unk>  and rehabilitation.<unk>  physicians apply electrophysiologic techniques, including needle electromyography and nerve conduction studies to diagnose, evaluate, and treat people with impairments of the neurologic, neuromuscular, and/or muscular systems. The provision of a quality<unk>  medical evaluation requires extensive scientific knowledge that includes anatomy and physiology of the peripheral nerves and muscles, the physics and biology of the electrical signals generated by muscle and nerve, the instrumentation used to process these signals, and techniques for clinical evaluation of diseases of the peripheral nerves and sensory pathways.
Electrodiagnostic medicine
Biomedical spectroscopy
Cardiophysics
Neuromuscular diagnostics
Clinical chemistry
Hemorheology
Exercise physiology
Neurophysiology