کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7282461 1473946 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Do all visual deficits cause pure alexia? Dissociations between visual processing and reading suggest “no”
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
پیش نمایش صفحه اول مقاله
Do all visual deficits cause pure alexia? Dissociations between visual processing and reading suggest “no”
چکیده انگلیسی
Pure alexia is a deficit of reading affecting the ability to process a word's letters in parallel. Instead, a slow, effortful letter-by-letter reading strategy is employed. It has been claimed that a visual impairment caused the reading impairment. The present study compares visual processing and word reading of a patient with severe visuospatial deficits due to probable posterior cortical atrophy (PCA) to two patients with pure alexia. A double dissociation emerged between visual processing and word reading: The participant with PCA was severely impaired in all visual tasks but read fluently while the patients with pure alexia read slowly but exhibited better preserved visual processing. It is concluded that a visual impairment does not inevitably lead to pure alexia, and that this syndrome is more plausibly conceived of as an orthographic deficit. In addition, the PCA patient's hypometabolism was assessed, and the interaction of the dorsal and ventral visual stream in word reading is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain and Cognition - Volume 125, August 2018, Pages 69-77
نویسندگان
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