Electrodiagnostic Evaluation (24-feb-2003) Physiological Basis for Electrodiagnostic Studies Resting Membrane Potentials Physiological Basis for Electrodiagnostic Studies Resting Membrane Potentials Action Potentials -action Potentials in Single Cells -compound Action Potentials Postsynaptic Potenti

Electrodiagnostic procedures have contributed to the certainty of diagnosis of a variety of neurological and neuromuscular diseases in animals. Widespread use of electrodiagnosis is limited by equipment costs and training of personnel. However, many of these procedures are used routinely in case work-ups in veterinary colleges or specialty practices. The purpose of this chapter is to present a brief review of the basic electrophysiology and methodology for a wide range of electrodiagnostic techniques. Examples of normal and abnormal recordings are presented, but the reader is referred to the literature for more specific information [1-22] or detailed descriptions of electrodiagnostic findings in specific neurological diseases. In addition, the American Association of Electrodiagnostic Medicine (www.aaem.net) provides instructional materials and courses on electromyography at both basic and advanced levels.