Electrodiagnosis
Encyclopedia
Electrodiagnosis is a method of obtaining information about disease
s by passively recording the electrical activity of body parts or by measuring their response to external electrical stimulus.
The electrical activity recorded may be spontaneous or elicited by stimuli. The most widely used methods of recording spontaneous electrical activity are electrocardiography (ECG) and electroencephalography
(EEG). The evoked potential studies
record the electrical responses after the stimulation of central nervous system structures.
Disease
A disease is an abnormal condition affecting the body of an organism. It is often construed to be a medical condition associated with specific symptoms and signs. It may be caused by external factors, such as infectious disease, or it may be caused by internal dysfunctions, such as autoimmune...
s by passively recording the electrical activity of body parts or by measuring their response to external electrical stimulus.
The electrical activity recorded may be spontaneous or elicited by stimuli. The most widely used methods of recording spontaneous electrical activity are electrocardiography (ECG) and electroencephalography
Electroencephalography
Electroencephalography is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain...
(EEG). The evoked potential studies
Evoked potential
An evoked potential is an electrical potential recorded from the nervous system of a human or other animal following presentation of a stimulus, as distinct from spontaneous potentials as detected by electroencephalography or electromyography .Evoked potential amplitudes tend to be low, ranging...
record the electrical responses after the stimulation of central nervous system structures.