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Direct linkCroot, Karen; Ballard, Kirrie; Leyton, Cristian E.; Hodges, John R. – Journal of Speech, Language, and Hearing Research, 2012
Purpose: The International Consensus Criteria for the diagnosis of primary progressive aphasia (PPA; Gorno-Tempini et al., 2011) propose apraxia of speech (AOS) as 1 of 2 core features of nonfluent/agrammatic PPA and propose phonological errors or absence of motor speech disorder as features of logopenic PPA. We investigated the sensitivity and…
Descriptors: Neurological Impairments, Speech Impairments, Aphasia, Phonology
Brice, Alejandro E.; Wallace, Sarah E.; Brice, Roanne G. – Communication Disorders Quarterly, 2014
Alzheimer's dementia (AD) is a progressive, degenerative disease that occurs in the cerebral cortex due to increased levels of glutamate, the proliferation of plaque-forming amyloid beta proteins, and reactive gliosis. Establishing behavioral indicators of the disease (e.g., impairments of episodic memory) and use of neuroimaging technology…
Descriptors: Alzheimers Disease, Aging (Individuals), Older Adults, Brain
Shim, HyungSub; Hurley, Robert S.; Rogalski, Emily; Mesulam, M.-Marsel – Neuropsychologia, 2012
This study evaluates spelling errors in the three subtypes of primary progressive aphasia (PPA): agrammatic (PPA-G), logopenic (PPA-L), and semantic (PPA-S). Forty-one PPA patients and 36 age-matched healthy controls were administered a test of spelling. The total number of errors and types of errors in spelling to dictation of regular words,…
Descriptors: Phoneme Grapheme Correspondence, Verbal Communication, Spelling, Phonetics
