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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology
Published on: June 29, 2021
Using lexical semantic cues to mitigate interference effects during real-time sentence processing in aphasia.
Niloofar Akhavan1,2, Henrike K Blumenfeld1,2, Lewis Shapiro1,2
1School of Speech, Language, and Hearing Sciences, San Diego State University, San Diego, CA, USA.
Mismatching noun phrase animacy aids real-time sentence processing in both unimpaired listeners and individuals with aphasia. This lexical-semantic cue improves distinctiveness during syntactic retrieval, even for those with aphasia, though processing is slower.
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Area of Science:
- Psycholinguistics
- Neurolinguistics
- Computational Linguistics
Background:
- Auditory sentence processing involves real-time integration of linguistic information.
- Aphasia, a language disorder, often impairs sentence comprehension.
- Similarity-based interference can complicate the linking of sentence elements.
Purpose of the Study:
- To investigate real-time auditory sentence processing in unimpaired listeners and individuals with aphasia.
- To examine how manipulating noun phrase animacy affects encoding and retrieval dynamics.
- To determine if individuals with aphasia are sensitive to lexical-semantic cues in real-time.
Main Methods:
- Utilized a visual-world eye-tracking paradigm for real-time analysis.
- Examined canonical sentence structures with unaccusative verbs and long-distance dependencies.
- Manipulated noun phrase animacy (matched vs. mismatched) to test for similarity-based interference.
Main Results:
- A significant effect of animacy manipulation was observed in both groups.
- Mismatching noun phrase animacy enhanced the distinctiveness of the verb's subject target during syntactic retrieval.
- Individuals with aphasia demonstrated sensitivity to the lexical-semantic cue, albeit with slower processing.
Conclusions:
- Reducing similarity-based interference via animacy mismatching aids real-time sentence comprehension.
- Individuals with aphasia show sensitivity to lexical-semantic cues in real-time auditory processing.
- Findings contribute to the cue-based retrieval model by elucidating real-time sentence comprehension mechanisms.