Lexical competition effects in aphasia: deactivation of lexical candidates in spoken word processing.
نویسنده
چکیده
Research has shown that Broca's and Wernicke's aphasic patients show different impairments in auditory lexical processing. The results of an experiment with form-overlapping primes showed an inhibitory effect of form-overlap for control adults and a weak inhibition trend for Broca's aphasic patients, but a facilitatory effect of form-overlap was found for Wernicke's aphasic participants. This suggests that Wernicke's aphasic patients are mainly impaired in suppression of once-activated word candidates and selection of one winning candidate, which may be related to their problems in auditory language comprehension.
منابع مشابه
Lexical competition eVects in aphasia: Deactivation of lexical candidates in spoken word processing
Research has shown that Broca’s and Wernicke’s aphasic patients show diVerent impairments in auditory lexical processing. The results of an experiment with form-overlapping primes showed an inhibitory eVect of form-overlap for control adults and a weak inhibition trend for Broca’s aphasic patients, but a facilitatory eVect of form-overlap was found for Wernicke’s aphasic participants. This sugg...
متن کاملTheories of spoken word recognition deficits in aphasia: evidence from eye-tracking and computational modeling.
We used eye-tracking to investigate lexical processing in aphasic participants by examining the fixation time course for rhyme (e.g., carrot-parrot) and cohort (e.g., beaker-beetle) competitors. Broca's aphasic participants exhibited larger rhyme competition effects than age-matched controls. A re-analysis of previously reported data (Yee, Blumstein, & Sedivy, 2008) confirmed that Wernicke's ap...
متن کاملSpoken-word processing in aphasia: effects of item overlap and item repetition.
Two studies were carried out to investigate the effects of presentation of primes showing partial (word-initial) or full overlap on processing of spoken target words. The first study investigated whether time compression would interfere with lexical processing so as to elicit aphasic-like performance in non-brain-damaged subjects. The second study was designed to compare effects of item overlap...
متن کاملLexical-Semantic Activation in Broca's and Wernicke's Aphasia: Evidence from Eye Movements
Lexical processing requires both activating stored representations and selecting among active candidates. The current work uses an eye-tracking paradigm to conduct a detailed temporal investigation of lexical processing. Patients with Broca's and Wernicke's aphasia are studied to shed light on the roles of anterior and posterior brain regions in lexical processing as well as the effects of lexi...
متن کاملPhonotactics, density, and entropy in spoken word recognition
Previous research has demonstrated that increases in phonotactic probability facilitate spoken word processing, whereas increased competition among lexical representations is often associated with slower and less accurate recognition. We examined the combined effects of probabilistic phonotactics and lexical competition by generating words and nonwords that varied orthogonally on phonotactics a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Brain and language
دوره 97 1 شماره
صفحات -
تاریخ انتشار 2006