EVects of nonlinguistic auditory variations on lexical processing in Broca’s aphasics  

Oleh:

Kittredge, Audrey ; Davis, Lissa ; Blumstein, Sheila E.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 97 no. 1 (2006), page 25-40.
Topik: Lexical access; Aphasia; Speaker variation; White noise; Lexical decision
Fulltext: 97_01_Kittredge.pdf (582.01KB)

Isi artikel

In a series of experiments, the eVect 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 eVect upon the performance of either the normal or aphasic individuals. The absence of a talker variation eVect suggests that voice-speciWc 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 deWcit characterized by limited computational resources.

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