Surface EMG and related measures in normal and vocally hyperfunctional speakers.
Surface electromyographic (EMG) signals were detected from the laryngeal area of 7 normal and 7 vocally hyperfunctional speakers during rest, two resisted-force maneuvers, vowel production, and connected speech. Vowel fundamental frequency, absolute and relative period perturbation, laryngeal-palpation ratings, and harshness ratings were acquired as well. The two groups differed significantly on all EMG measures except those associated with the resisted-force maneuvers, the vowel EMG-to-rest EMG ratio, and the speech EMG-to-rest EMG ratio. Moderately high correlations were evident between selected clinical measures and speech EMG values.
Redenbaugh
M A
MA
Virginia Mason Clinic, Seattle, WA.
Reich
A R
AR
D000293:Adolescent; D000328:Adult; D000368:Aged; D004576:Electromyography; D005260:Female; D006801:Humans; D007830:Larynx; D008297:Male; D008875:Middle Aged; D013060:Speech / Q000502:physiology*; D014832:Voice Disorders / Q000503:physiopathology*; D014833:Voice Quality