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Article
May 1946

REVIEW OF NEUROPSYCHIATRY FOR 1945

Arch Intern Med (Chic). 1946;77(5):576-591. doi:10.1001/archinte.1946.00210400101008
Abstract

THE electrical examination of the nerve and muscle has long been an important part of the neurologist's work. Since the days of Erb the determination of the reaction of muscle to faradic and galvanic stimulation has been the common practice. This gave qualitative results of value to the clinician, but the importance of changes of polarity was overemphasized, and the "R.D." (reaction of degeneration) was at best a rough test of function. Since this, "chronaxie" has had its day and failed to satisfy the needs of a useful clinical test. It is now replaced by two methods: (a) the determination of strength-duration curves, i. e., the relation of voltage to duration in time of the stimulus,1 and (b) the measurement of the accommodation constants of muscles during regeneration by progressively modulated currents.2

It now seems possible that the improved technics of electromyography may supplant these other electrical methods

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