Journal
CURRENT NEUROLOGY AND NEUROSCIENCE REPORTS
Volume 23, Issue 7, Pages 353-359Publisher
SPRINGER
DOI: 10.1007/s11910-023-01275-1
Keywords
Apraxia of speech; Progressive supranuclear palsy; Corticobasal syndrome; Phonetic; Prosodic; Tauopathy; Degenerative disease
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This article reviews recent findings regarding the clinic phenotypes of AOS, neuroimaging correlates, and the underlying disease processes. Recent studies have identified two clinical subtypes of AOS that are linked to molecular pathology. New imaging techniques have been applied to the study of progressive AOS. While there is limited data on the impact of behavioral intervention, studies suggest some benefit in speech intelligibility and maintenance for patients with AOS.
Purpose of ReviewApraxia of speech (AOS) is a motor speech disorder that has long been recognized to occur secondary to acute neurologic insults and, more recently, to neurodegenerative diseases as a harbinger for progressive supranuclear palsy and corticobasal syndrome. This article reviews recent findings regarding the clinic phenotypes of AOS, neuroimaging correlates, and the underlying disease processes.Recent FindingsTwo clinical subtypes of AOS map onto two underlying 4-repeat tauopathies. New imaging techniques have recently been applied to the study of progressive AOS. There is no data on the impact of behavioral intervention, although studies of nonfluent/agrammatic primary progressive aphasia that include patients with AOS suggest some benefit in speech intelligibility and maintenance.While recent findings suggest subtypes of AOS exist that are linked to molecular pathology and have important implications for disease progression, further research is needed to assess outcome of behavioral and other types of intervention.
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