Astell, Arlene Jean (1995) Disordered speech in dementia. PhD thesis, University of Warwick.

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Abstract

What is the effect on language of the progressive degenerative disorder, Alzheimer's
disease (AD)? What are the functional consequences of this illness, particularly for
speech? The majority of accounts interpret speech disorder in AD as reflecting
underlying semantic disruption. In contrast I apply current theories of lexicalization
in speech production to the speech disorder. Four competing hypotheses are derived
from a two-stage model of lexicalization in speech production. This model contains
separate semantic, lexical and phonological representations. Data are collected from
patients with probable AD and age-matched controls using standard psycholinguistic
techniques. The data support an explanation of progressively impaired higher level
cognitive processing which interacts with impaired semantic to lexical processing in
speech production.

Item Type:	Thesis or Dissertation (PhD)
Subjects:	R Medicine > RC Internal medicine
Library of Congress Subject Headings (LCSH):	Alzheimer's disease -- Pathophysiology, Speech disorders
Official Date:	November 1995
Dates:	Date Event November 1995 Submitted
Institution:	University of Warwick
Theses Department:	Department of Psychology
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Harley, Trevor A.
Sponsors:	Economic and Social Research Council (Great Britain) (ESRC) ; Medical Research Council (Great Britain) (MRC) ; Science and Engineering Research Council (Great Britain) (SERC)
Extent:	xiv, 266 p.
Language:	eng

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