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Naming and inhibition in aphasia.

Bartels-Tobin, Lori R.

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Naming and inhibition in aphasia.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Naming and inhibition in aphasia./
Author:	Bartels-Tobin, Lori R.
Description:	78 p.
Notes:	Adviser: Jacqueline J. Hinckley.
Contained By:	Dissertation Abstracts International68-04B.
Subject:	Health Sciences, Speech Pathology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3260040

Naming and inhibition in aphasia.
Bartels-Tobin, Lori R.

Naming and inhibition in aphasia. - 78 p.

Adviser: Jacqueline J. Hinckley.

Thesis (Ph.D.)--University of South Florida, 2007.

Lexical retrieval models illustrate both activation and inhibition between concepts, words, and phonemes. When semantic activation spreads from one concept to its related concepts, inhibition is recruited so that competition between related concepts can be overcome and a target production achieved. Persons with aphasia often exhibit difficulty with producing the desired response, which could be the result of inadequate inhibitory processes to overcome response competition.Subjects--Topical Terms:

1018105
Health Sciences, Speech Pathology.

Naming and inhibition in aphasia.
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005 20110525
008 110525s2007 ||||||||||||||||| ||eng d
035 $a (UMI)AAI3260040
035 $a AAI3260040
040 $a UMI $c UMI
100 1 $a Bartels-Tobin, Lori R. $3 1272961
245 1 0 $a Naming and inhibition in aphasia.
300 $a 78 p.
500 $a Adviser: Jacqueline J. Hinckley.
500 $a Source: Dissertation Abstracts International, Volume: 68-04, Section: B, page: 2313.
502 $a Thesis (Ph.D.)--University of South Florida, 2007.
520 $a Lexical retrieval models illustrate both activation and inhibition between concepts, words, and phonemes. When semantic activation spreads from one concept to its related concepts, inhibition is recruited so that competition between related concepts can be overcome and a target production achieved. Persons with aphasia often exhibit difficulty with producing the desired response, which could be the result of inadequate inhibitory processes to overcome response competition.
520 $a Inhibitory processing is typically measured using a negative priming task. Twenty participants with aphasia, twenty-five young participants, and twenty age-matched aphasia group controls were recruited for this study. Participants with aphasia completed a picture-naming task, two written lexical decision tasks, subtests of an aphasia assessment, and the negative priming lexical decision task. Control groups completed only the negative priming task. This task consisted of 4 blocks of 72 trials each in which target words were related associates (RA), related distractors (RD), or unrelated (UN), or pseudowords.
520 $a Results indicate that no groups showed predicted decreased reaction times to the RA condition. Instead of showing the fastest reaction times, the average RTs in the RA condition were between those in the RD and the UN conditions. Error rates were higher in the aphasia group, with significantly more errors for related conditions. In the young control group, significant negative priming was achieved. However, in the aphasia and aphasia-control groups, there was no significant negative priming. Multiple regression analysis determined that time post onset, age, education, type of fluency, and classification of anomia were not significant predictors of these results in the aphasia group.
520 $a It is argued that these results are not strategically induced secondary to expectancy or a semantic expectancy or a semantic-matching process. Using a prospective or a retrospective strategy would be useless since only a small portion of the prime-probe pairs are directly related. The results of the aphasia group and the aphasia-control group are similar to those found in the aging negative priming literature, but it is unclear if this should be interpreted as degraded inhibitory processes. Future studies to further explore negative priming in aphasia are discussed.
590 $a School code: 0206.
650 4 $a Health Sciences, Speech Pathology. $3 1018105
650 4 $a Psychology, Cognitive. $3 1017810
690 $a 0460
690 $a 0633
710 2 $a University of South Florida. $3 1020446
773 0 $t Dissertation Abstracts International $g 68-04B.
790 $a 0206
790 1 0 $a Hinckley, Jacqueline J., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3260040