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Direct linkDuffy, Joseph R.; Peach, Richard K.; Strand, Edythe A. – American Journal of Speech-Language Pathology, 2007
Purpose: To document and describe in detail the occurrence of apraxia of speech (AOS) in a group of individuals with a diagnosis of motor neuron disease (MND). Method: Seven individuals with MND and AOS were identified from among 80 patients with a variety of neurodegenerative diseases and AOS (J. R. Duffy, 2006). The history, presenting…
Descriptors: Speech Impairments, Neurological Impairments, Psychomotor Skills, Physical Disabilities
Rosen, Kristin M.; Kent, Raymond D.; Delaney, Amy L.; Duffy, Joseph R. – Journal of Speech, Language, and Hearing Research, 2006
Purpose: This study's main purpose was to (a) identify acoustic signatures of hypokinetic dysarthria (HKD) that are robust to phonetic variation in conversational speech and (b) determine specific characteristics of the variability associated with HKD. Method: Twenty healthy control (HC) participants and 20 participants with HKD associated with…
Descriptors: Acoustics, Speech Impairments, Neurological Impairments, Comparative Analysis
Shriberg, Lawrence D.; Ballard, Kirrie J.; Tomblin, J. Bruce; Duffy, Joseph R.; Odell, Katharine H.; Williams, Charles A. – Journal of Speech, Language, and Hearing Research, 2006
Purpose: The primary goal of this case study was to describe the speech, prosody, and voice characteristics of a mother and daughter with a breakpoint in a balanced 7;13 chromosomal translocation that disrupted the transcription gene, "FOXP2" (cf. J. B. Tomblin et al., 2005). As with affected members of the widely cited KE family, whose…
Descriptors: Case Studies, Mothers, Daughters, Speech Impairments
