TY - JOUR
T1 - Primary progressive apraxia of speech
T2 - Clinical features and acoustic and neurologic correlates
AU - Duffy, Joseph R.
AU - Strand, Edythe A.
AU - Clark, Heather
AU - Machulda, Mary
AU - Whitwell, Jennifer L.
AU - Josephs, Keith A.
N1 - Publisher Copyright:
© 2015 American Speech-Language-Hearing Association.
PY - 2015
Y1 - 2015
N2 - Purpose: This study summarizes 2 illustrative cases of a neurodegenerative speech disorder, primary progressive apraxia of speech (AOS), as a vehicle for providing an overview of the disorder and an approach to describing and quantifying its perceptual features and some of its temporal acoustic attributes. Method: Two individuals with primary progressive AOS underwent speech-language and neurologic evaluations on 2 occasions, ranging from 2.0 to 7.5 years postonset. Performance on several tests, tasks, and rating scales, as well as several acoustic measures, were compared over time within and between cases. Acoustic measures were compared with performance of control speakers. Results: Both patients initially presented with AOS as the only or predominant sign of disease and without aphasia or dysarthria. The presenting features and temporal progression were captured in an AOS Rating Scale, an Articulation Error Score, and temporal acoustic measures of utterance duration, syllable rates per second, rates of speechlike alternating motion and sequential motion, and a pairwise variability index measure. Conclusions: AOS can be the predominant manifestation of neurodegenerative disease. Clinical ratings of its attributes and acoustic measures of some of its temporal characteristics can support its diagnosis and help quantify its salient characteristics and progression over time.
AB - Purpose: This study summarizes 2 illustrative cases of a neurodegenerative speech disorder, primary progressive apraxia of speech (AOS), as a vehicle for providing an overview of the disorder and an approach to describing and quantifying its perceptual features and some of its temporal acoustic attributes. Method: Two individuals with primary progressive AOS underwent speech-language and neurologic evaluations on 2 occasions, ranging from 2.0 to 7.5 years postonset. Performance on several tests, tasks, and rating scales, as well as several acoustic measures, were compared over time within and between cases. Acoustic measures were compared with performance of control speakers. Results: Both patients initially presented with AOS as the only or predominant sign of disease and without aphasia or dysarthria. The presenting features and temporal progression were captured in an AOS Rating Scale, an Articulation Error Score, and temporal acoustic measures of utterance duration, syllable rates per second, rates of speechlike alternating motion and sequential motion, and a pairwise variability index measure. Conclusions: AOS can be the predominant manifestation of neurodegenerative disease. Clinical ratings of its attributes and acoustic measures of some of its temporal characteristics can support its diagnosis and help quantify its salient characteristics and progression over time.
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U2 - 10.1044/2015_AJSLP-14-0174
DO - 10.1044/2015_AJSLP-14-0174
M3 - Article
C2 - 25654422
AN - SCOPUS:84929359742
SN - 1058-0360
VL - 24
SP - 88
EP - 100
JO - American journal of speech-language pathology
JF - American journal of speech-language pathology
IS - 2
ER -