ERIC Number: EJ732141
Record Type: Journal
Publication Date: 2006-Apr
Pages: 16
Abstractor: Author
ISBN: N/A
ISSN: ISSN-0093-934X
EISSN: N/A
Effects of Nonlinguistic Auditory Variations on Lexical Processing in Broca's Aphasics
Kittredge, Audrey; Davis, Lissa; Blumstein, Sheila E.
Brain and Language, v97 n1 p25-40 Apr 2006
In a series of experiments, the effect of white noise distortion and talker variation on lexical access in normal and Broca's aphasic participants was examined using an auditory lexical decision paradigm. Masking the prime stimulus in white noise resulted in reduced semantic priming for both groups, indicating that lexical access is degraded by nonlinguistic white noise distortion. However, talker variation within a prime-target pair had no effect upon the performance of either the normal or aphasic individuals. The absence of a talker variation effect suggests that voice-specific information is not encoded in the lexical representations of words. The normal performance of Broca's aphasics under conditions of both white noise and talker variation supports the view that these patients have a lexical processing impairment rather than a more generalized language deficit characterized by limited computational resources.
Descriptors: Aphasia, Acoustics, Auditory Stimuli, Patients, Language Processing, Word Recognition, Semantics
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A