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AAEM minimonograph #14: The influence of temperature in clinical neurophysiology
Author(s) -
Denys Eric H.
Publication year - 1991
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.880140902
Subject(s) - somatosensory evoked potential , neurophysiology , neuromuscular transmission , nerve conduction , clinical neurophysiology , electromyography , neuroscience , electrodiagnosis , medicine , physical medicine and rehabilitation , anatomy , psychology , anesthesia , electroencephalography , cardiology
AAEM MINIMONOGRAPH #14Temperature affects biologic and neurophysiologic processes and is, therefore, always well controlled in in vitro experiments. Its role is equally important in the clinical laboratory but has often been neglected. Lower temperatures cause slower nerve conduction velocities (NCVs), and increased amplitudes of muscle and nerve potentials. Fibrillations may disappear, and muscle contraction will be slower and weaker. Neuromuscular transmission improves. Somatosensory evoked potentials (SEPs) are similarly vulnerable in the peripheral segments, or with changes in central temperature. As a result, abnormalities are artificially created or existing defects are not detected, resulting in false or missed diagnoses. Control of temperature, albeit somewhat time consuming, will result in greater diagnostic accuracy.