The Normal Electromyogram in Human Vocal Muscles

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Abstract
By means of the transcutaneous approach previously used in retrograde inspection of the larynx a method for electromyographic examination of the vocal muscle in man has been developed which usually permits identification of some twenty motor unit potentials from each muscle without causing apparent discomfort to the subjects. Data obtained in recordings from eighteen normal muscles in eight healthy subjects and five patients with unilateral vocal cord pareses are presented.