Nerve conduction studies. Types, components, abnormalities, and value in localization.
Nerve conduction studies are essential components of the electrodiagnostic study. Several components might be analyzed and are diagnostically important. These include amplitude, duration, area, latency, and conduction velocity. Nerve lesions cause axon loss or demyelination, and in nerve conduction studies, have distinctive patterns. An important function of the electrodiagnostic examination, including nerve conduction studies and needle electromyography examinations, is to localize nerve lesions as accurately as possible.
Wilbourn
Asa J
AJ
EMG Laboratory, Neurology Department, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44107, USA.
D001369:Axons / Q000502:physiology; D004568:Electrodiagnosis / Q000379:methods*; D004576:Electromyography / Q000379:methods*; D019054:Evoked Potentials, Motor / Q000502:physiology; D006801:Humans; D009046:Motor Neurons / Q000502:physiology; D009431:Neural Conduction / Q000502:physiology*; D009468:Neuromuscular Diseases / Q000175:diagnosis* / Q000503:physiopathology; D010523:Peripheral Nervous System Diseases / Q000175:diagnosis* / Q000503:physiopathology; D011930:Reaction Time / Q000502:physiology