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| Research article summary (published 30 Mar 2002): |
Information processing speed and sentence comprehension in Parkinson's disease.
Full Abstract
This study tests the hypothesis that sentence comprehension difficulty in Parkinson's disease (PD) is related in part to altered information processing speed that plays a crucial role in grammatical processing. The authors measured information processing speed in 32 PD patients without dementia using a lexical list-priming paradigm in which the interstimulus interval (ISI) between the prime and the target varied. Sentence comprehension accuracy was also assessed in 22 of these patients. Sentence comprehension accuracy for object-relative center-embedded sentences was impaired in a subgroup of PD patients. This subgroup of PD patients primed at an abnormally long ISI. Similarly, only PD patients who primed at a long ISI had greater difficulty understanding sentences with an object-relative clause than a subject-relative clause. Findings suggest that slowed information processing speed contributes to sentence comprehension difficulty in PD.
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Author information
Author/s: Grossman, Murray (M); Zurif, Edgar (E); Lee, Christine (C); Prather, Penny (P); Kalmanson, Julia (J); Stern, Matthew B (MB); Hurtig, Howard I (HI);
Affiliation: Department of Neurology, University of Pennsylvania School of Medicine, Philadelphia 19104-4283, USA. mgrossma(-atsign-)mail.med.upenn.edu
Grants: AG10496 (Agency:United States NIA) ; AG15116 (Agency:United States NIA) ; AG17586 (Agency:United States NIA) ; DC02984 (Agency:United States NIDCD) ; NS35867 (Agency:United States NINDS)
Journal and publication information
Publication Type: Clinical Trial; Journal Article; Research Support, U.S. Gov't, P.H.S.
Journal: Neuropsychology (Neuropsychology), published in United States. (Language: eng)
Reference: 2002-Apr; vol 16 (issue 2) : pp 174-81
Dates: Created 2002/04/12; Completed 2002/10/29; Revised 2007/11/14;
PMID: 11949709, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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