Acoustic Impedance Measurement in the Study of Patients with Spasmodic Dysphonia The use of acoustic impedance measurement for the study of middle ear muscle dysfunction in patients with spasmodic dysphonia is advocated. Preliminary data reported here provide evidence of a high incidence of apparent middle ear muscle dysfunction in these patients. The findings appear to add further support to the theory ... Forum
Forum  |   May 01, 1973
Acoustic Impedance Measurement in the Study of Patients with Spasmodic Dysphonia
 
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Forum   |   May 01, 1973
Acoustic Impedance Measurement in the Study of Patients with Spasmodic Dysphonia
Journal of Speech and Hearing Disorders, May 1973, Vol. 38, 250-255. doi:10.1044/jshd.3802.250
History: Received August 9, 1972 , Accepted December 29, 1972
 
Journal of Speech and Hearing Disorders, May 1973, Vol. 38, 250-255. doi:10.1044/jshd.3802.250
History: Received August 9, 1972; Accepted December 29, 1972

The use of acoustic impedance measurement for the study of middle ear muscle dysfunction in patients with spasmodic dysphonia is advocated. Preliminary data reported here provide evidence of a high incidence of apparent middle ear muscle dysfunction in these patients. The findings appear to add further support to the theory of neurogenic dysfunction in spasmodic dysphonia. Observations of possible problems in muscle relaxation in some patients and tremor of the middle ear muscle(s) in others are interpreted as being suggestive of neurologic involvement of the extrapyramidal motor system.

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