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 ... Reports
Reports  |   February 01, 1989
Surface EMG and Related Measures in Normal and Vocally Hyperfunctional Speakers
 
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Article Information
Reports   |   February 01, 1989
Surface EMG and Related Measures in Normal and Vocally Hyperfunctional Speakers
Journal of Speech and Hearing Disorders, February 1989, Vol. 54, 68-73. doi:10.1044/jshd.5401.68
History: Received May 11, 1987 , Accepted February 10, 1988
 
Journal of Speech and Hearing Disorders, February 1989, Vol. 54, 68-73. doi:10.1044/jshd.5401.68
History: Received May 11, 1987; Accepted February 10, 1988

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.

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