title: Lexical processing in Spanish patients with probable Alzheimer's disease.
abstract: Twenty Spanish patients with probable Alzheimer's disease (AD) and 20 matched controls were given a battery of 17 tasks involving object recognition and the spoken and written perception and production of words and non-words. The AD patients were significantly impaired on nine of the tasks. Prominent among these were tasks that involve semantic processing, though non-word reading was also impaired. Performance on a category fluency task best discriminated AD patients from controls. It is proposed that impairment to semantic processing underlies most of the observed deficits on lexical processing tasks in patients with early AD, but that non-word reading may be sensitive to additional, mild impairments to phonological representations caused by extension of the degenerative process from anterior to posterior temporal regions.
authors.affiliation: Department of Psychology, University of Oviedo, Oviedo, Spain.
authors.forename: Fernando
authors.initials: F
authors.lastname: Cuetos
authors.forename: Teresa
authors.initials: T
authors.lastname: Martinez
authors.forename: Carmen
authors.initials: C
authors.lastname: Martinez
authors.forename: Cristina
authors.initials: C
authors.lastname: Izura
authors.forename: Andrew W
authors.initials: AW
authors.lastname: Ellis
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000523:psychology*; D003657:Decision Making / Q000502:physiology; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D009483:Neuropsychological Tests; D011597:Psychomotor Performance / Q000502:physiology; D011932:Reading; D013060:Speech / Q000502:physiology; D013067:Speech Perception / Q000502:physiology*; D014956:Writing