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Perceptual And Instrumental Assessments Of Orofacial Muscle Tone In Dysarthric And Normal Speakers, Angela M. Dietsch, Nancy Pearl Solomon, Laura A. Sharkey, Joseph R. Duffy, Edythe A. Strand, Heather M. Clark
Perceptual And Instrumental Assessments Of Orofacial Muscle Tone In Dysarthric And Normal Speakers, Angela M. Dietsch, Nancy Pearl Solomon, Laura A. Sharkey, Joseph R. Duffy, Edythe A. Strand, Heather M. Clark
Department of Special Education and Communication Disorders: Faculty Publications
Clinical assessment of orofacial muscle tone is of interest for differential diagnosis of the dysarthrias, but standardized procedures and normative data are lacking. In this study, perceptual ratings of tone were compared with instrumental measures of tissue stiffness for facial, lingual, and masticatory muscles in 70 individuals with dysarthria. Perceptual and instrumental tone data were discordant and failed to discriminate between five dysarthria types. These results raised concerns about the validity of Myoton-3 stiffness measures in the orofacial muscles. Therefore, a second study evaluated contracted and relaxed orofacial muscles in 10 neurotypical adults. Results for the cheek, masseter, and lateral …