PUBLICATION DATE

2012-05

TITLE

The time-course of lexical activation during sentence comprehension in people with aphasia.

ISSUE

2

VOLUME

21

ISSN (print)

N/A

ISSN (electronic)

N/A

ABSTRACT

PURPOSE: To investigate the time-course of processing of lexical items in auditorily presented canonical (subject-verb-object) constructions in young, neurologically unimpaired control participants and participants with left-hemisphere damage and agrammatic aphasia. METHOD: A cross modal picture priming (CMPP) paradigm was used to test 114 control participants and 8 participants with agrammatic aphasia for priming of a lexical item (direct object noun) immediately after it is initially encountered in the ongoing auditory stream and at 3 additional time points at 400-ms intervals. RESULTS: The control participants demonstrated immediate activation of the lexical item, followed by a rapid loss (decay). The participants with aphasia demonstrated delayed activation of the lexical item. CONCLUSION: This evidence supports the hypothesis of a delay in lexical activation in people with agrammatic aphasia. The delay in lexical activation feeds syntactic processing too slowly, contributing to comprehension deficits in people with agrammatic aphasia.

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16 TRIPLES      14 PREDICATES      17 URIs      10 LITERALS

Subject Predicate Object
1 articles:687f3e26f02b8ae6968939e3394fb6be sg:abstract PURPOSE: To investigate the time-course of processing of lexical items in auditorily presented canonical (subject-verb-object) constructions in young, neurologically unimpaired control participants and participants with left-hemisphere damage and agrammatic aphasia. METHOD: A cross modal picture priming (CMPP) paradigm was used to test 114 control participants and 8 participants with agrammatic aphasia for priming of a lexical item (direct object noun) immediately after it is initially encountered in the ongoing auditory stream and at 3 additional time points at 400-ms intervals. RESULTS: The control participants demonstrated immediate activation of the lexical item, followed by a rapid loss (decay). The participants with aphasia demonstrated delayed activation of the lexical item. CONCLUSION: This evidence supports the hypothesis of a delay in lexical activation in people with agrammatic aphasia. The delay in lexical activation feeds syntactic processing too slowly, contributing to comprehension deficits in people with agrammatic aphasia.
2 sg:doi 10.1044/1058-0360(2012/11-0109)
3 sg:doiLink http://dx.doi.org/10.1044/1058-0360%282012/11-0109%29
4 sg:isFundedPublicationOf grants:4be84071a5b00c37086e4f1c6b521338
5 grants:ce928ce551eac81d2f4840d863884266
6 grants:f30c82743c257057d82aedddbd4b8988
7 sg:issue 2
8 sg:language English
9 sg:license http://scigraph.springernature.com/explorer/license/
10 sg:publicationYear 2012
11 sg:publicationYearMonth 2012-05
12 sg:scigraphId 687f3e26f02b8ae6968939e3394fb6be
13 sg:title The time-course of lexical activation during sentence comprehension in people with aphasia.
14 sg:volume 21
15 rdf:type sg:Article
16 rdfs:label Article: The time-course of lexical activation during sentence comprehension in people with aphasia.
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