دانلود مقاله ISI انگلیسی شماره 29953
ترجمه فارسی عنوان مقاله

بازنمودهای پراکنده در مقابل بازنمودهای محلی؛ مدارک و شواهد از بررسی سازگاری مورد در یک مورد نام پریشی کلاسیک

عنوان انگلیسی
Distributed versus Localist Representations: Evidence from a Study of Item Consistency in a Case of Classical Anomia
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی ترجمه فارسی
29953 2015 22 صفحه PDF سفارش دهید
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منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Brain and Language, Volume 64, Issue 3, 1 October 1998, Pages 339–360

ترجمه کلمات کلیدی
نام پریشی کلاسیک
کلمات کلیدی انگلیسی
Classical Anomia ,
پیش نمایش مقاله
پیش نمایش مقاله  بازنمودهای پراکنده در مقابل بازنمودهای محلی؛ مدارک و شواهد از بررسی سازگاری مورد در یک مورد نام پریشی کلاسیک

چکیده انگلیسی

Models of word production and comprehension can be split into two broad classes: localist and distributed. In localist architectures each word within the lexicon is represented by a single unit. The distributed approach, on the other hand, encodes each lexical item as a pattern of activation across a set of shared units. If we assume that the localist representations are more than a convenient shorthand for distributed representations at the neuroanatomical level, it should be possible to find patients who, after brain injury, have lost specific words from their premorbid vocabulary. Following a closed head injury, JS had severe word-finding difficulties with no measurable semantic impairment nor did he make phonological errors in naming. Cueing with an initial phoneme proved relatively ineffective. JS showed a high degree of item consistency across three administrations of two tests of naming to confrontation. This consistency could not be predicted from a linear combination of psycholinguistic variables but the distribution fitted a stochastic model in which it is assumed that a proportion of items have become consistently unavailable. Further evidence is presented which suggests that these items are not, in fact, lost but rather have a very low probability of retrieval. Given phonemic cueing of sufficient length, or delayed repetition priming from a written word, the consistently unnamed items were produced by JS. Additional data is reported which seems to support a distributed model of speech production. JS's naming accuracy for one set of pictures was found to predict his performance on a second set of items only when the names of the pictures were both semantically and phonologically related (e.g., cat–rat). There was no association for pairs of pictures if they were only semantically (e.g., cat–dog) or phonologically related (e.g., cat–cap). It is argued that JS's data are best described in terms of a graded, non-linear, distributed model of speech production.

مقدمه انگلیسی

Models of word production and comprehension can be split into two broad classes: localist and distributed. In localist architectures each word within the lexicon is represented by a single unit. The distributed approach, on the other hand, encodes each lexical item as a pattern of activation across a set of shared units. If we assume that the localist representations are more than a convenient shorthand for distributed representations at the neuroanatomical level, it should be possible to find patients who, after brain injury, have lost specific words from their premorbid vocabulary. Following a closed head injury, JS had severe word-finding difficulties with no measurable semantic impairment nor did he make phonological errors in naming. Cueing with an initial phoneme proved relatively ineffective. JS showed a high degree of item consistency across three administrations of two tests of naming to confrontation. This consistency could not be predicted from a linear combination of psycholinguistic variables but the distribution fitted a stochastic model in which it is assumed that a proportion of items have become consistently unavailable. Further evidence is presented which suggests that these items are not, in fact, lost but rather have a very low probability of retrieval. Given phonemic cueing of sufficient length, or delayed repetition priming from a written word, the consistently unnamed items were produced by JS. Additional data is reported which seems to support a distributed model of speech production. JS's naming accuracy for one set of pictures was found to predict his performance on a second set of items only when the names of the pictures were both semantically and phonologically related (e.g., cat–rat). There was no association for pairs of pictures if they were only semantically (e.g., cat–dog) or phonologically related (e.g., cat–cap). It is argued that JS's data are best described in terms of a graded, non-linear, distributed model of speech production.

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هزینه ترجمه مقاله توسط مترجمان با تجربه، طبق جدول زیر محاسبه می شود:

شرح تعرفه ترجمه زمان تحویل جمع هزینه
ترجمه تخصصی - سرعت عادی هر کلمه 90 تومان 13 روز بعد از پرداخت 762,030 تومان
ترجمه تخصصی - سرعت فوری هر کلمه 180 تومان 7 روز بعد از پرداخت 1,524,060 تومان
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.