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Effects of Lexical Processing Defici...

Choy, Jungwon Janet.

Effects of Lexical Processing Deficits on Sentence Comprehension in Agrammatic Broca's Aphasia.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Effects of Lexical Processing Deficits on Sentence Comprehension in Agrammatic Broca's Aphasia.
Author:	Choy, Jungwon Janet.
Description:	177 p.
Notes:	Source: Dissertation Abstracts International, Volume: 72-12, Section: B, page: 7705.
Notes:	Adviser: Cynthia K. Thompson.
Contained By:	Dissertation Abstracts International72-12B.
Subject:	Language, Linguistics.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3469703
ISBN:	9781124860138

Effects of Lexical Processing Deficits on Sentence Comprehension in Agrammatic Broca's Aphasia.
Choy, Jungwon Janet.

Effects of Lexical Processing Deficits on Sentence Comprehension in Agrammatic Broca's Aphasia. - 177 p.

Source: Dissertation Abstracts International, Volume: 72-12, Section: B, page: 7705.

Thesis (Ph.D.)--Northwestern University, 2011.

This study investigated lexical processing deficits and the effects of these deficits on sentence comprehension in agrammatic Broca's aphasia. A series of three experiments was conducted with the goal of determining whether lexical access, lexical integration or both are impaired in agrammatic Broca's aphasia. Additionally, the influence of these impairments on agrammatic sentence comprehension was tested. The method of eye tracking-while-listening was employed along with comprehension probes. Ten individuals with Broca's aphasia and ten unimpaired age-matched control participants were tested in all three experiments.

ISBN: 9781124860138Subjects--Topical Terms:

212724
Language, Linguistics.

Effects of Lexical Processing Deficits on Sentence Comprehension in Agrammatic Broca's Aphasia.
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035 $a (UMI)AAI3469703
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040 $a UMI $c UMI
100 1 $a Choy, Jungwon Janet. $3 603194
245 1 0 $a Effects of Lexical Processing Deficits on Sentence Comprehension in Agrammatic Broca's Aphasia.
300 $a 177 p.
500 $a Source: Dissertation Abstracts International, Volume: 72-12, Section: B, page: 7705.
500 $a Adviser: Cynthia K. Thompson.
502 $a Thesis (Ph.D.)--Northwestern University, 2011.
520 $a This study investigated lexical processing deficits and the effects of these deficits on sentence comprehension in agrammatic Broca's aphasia. A series of three experiments was conducted with the goal of determining whether lexical access, lexical integration or both are impaired in agrammatic Broca's aphasia. Additionally, the influence of these impairments on agrammatic sentence comprehension was tested. The method of eye tracking-while-listening was employed along with comprehension probes. Ten individuals with Broca's aphasia and ten unimpaired age-matched control participants were tested in all three experiments.
520 $a Results showed that eye movement latency was slower for aphasic individuals compared to unimpaired controls for words but not for non-linguistic stimuli, indicating that agrammatic participants were delayed in accessing lexical items. However, when the rate of speech was manipulated in sentences involving syntactic movement to assess the effects of delayed lexical access on sentence comprehension, there was no difference in accuracy between the different speech rates. Lexical integration was also tested in agrammatic Broca's aphasia by manipulating the cloze probability of sentences involving syntactic movement. Manipulation of cloze probability affected comprehension in agrammatic individuals, who exhibited lower accuracy in the low cloze condition compared to the high cloze condition. Analysis of eye movements showed that both participant groups showed similar eye movements for the high cloze condition but not the low cloze condition, with the aphasic group showing greater lexical competition effects in the low cloze condition. Additionally, greater lexical competition effects were observed for incorrectly comprehended sentences compared to correctly comprehended sentences. These results indicate that lexical integration is impaired and may contribute to comprehension failure. Thus, while lexical access and lexical integration are both impaired in agrammatic Broca's aphasia, it is the deficit in lexical integration which seems to affect sentence comprehension.
590 $a School code: 0163.
650 4 $a Language, Linguistics. $3 212724
650 4 $a Biology, Neuroscience. $3 226972
650 4 $a Health Sciences, Speech Pathology. $3 603196
650 4 $a Psychology, Cognitive. $3 212507
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710 2 $a Northwestern University. $b Communication Sciences and Disorders. $3 603195
773 0 $t Dissertation Abstracts International $g 72-12B.
790 1 0 $a Thompson, Cynthia K., $e advisor
790 1 0 $a Marian, Viorica $e committee member
790 1 0 $a Booth, James R. $e committee member
790 $a 0163
791 $a Ph.D.
792 $a 2011
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3469703