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Grammatical Encoding and Learning in Agrammatic Aphasia: Evidence from Structural Priming
Soojin Cho-Reyes1, Jennifer E Mack1, Cynthia K Thompson1,2,3
1Department of Communication Sciences and Disorders, Northwestern University.
Journal of Memory and Language
|September 20, 2017
Summary
Aphasic speakers with agrammatism show intact structural priming, indicating their ability to form sentence representations. These priming effects are lasting and potentially beneficial for speech production therapy.
Area of Science:
- Neuroscience
- Psycholinguistics
- Speech-Language Pathology
Background:
- Agrammatic aphasia is characterized by sentence production deficits.
- Understanding the underlying cognitive mechanisms is crucial for effective treatment.
Purpose of the Study:
- To investigate sentence production in agrammatic aphasia using structural priming.
- To determine if agrammatic speakers form structural and thematic representations.
- To assess the lasting effects of structural priming in agrammatism.
Main Methods:
- Two structural priming experiments were conducted with 13 aphasic and 13 control speakers.
- Participants repeated prime sentences and produced dative sentences from word arrays.
- Structural and thematic priming effects were analyzed across different lag conditions.
Main Results:
- Aphasic speakers demonstrated intact structural priming effects, similar to controls.
- Thematic priming effects were observed in some conditions for aphasic speakers.
- Both groups showed lasting structural priming effects, supporting implicit learning.
Conclusions:
- Agrammatic speakers can generate structural representations and access thematic ones.
- Structural priming effects are comparable between aphasic and unimpaired speakers.
- Findings suggest structural priming may aid in treating sentence production deficits in agrammatism.
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