دانلود مقاله ISI انگلیسی شماره 39770
عنوان فارسی مقاله

مدارک و شواهد برای ادراک پریشی اختلال ادراکی بصری (prosop) : یک مطالعه مورد

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
39770 2004 16 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Evidence for perceptual deficits in associative visual (prosop)agnosia: a single-case study
منبع

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

Journal : Neuropsychologia, Volume 42, Issue 5, 2004, Pages 597–612

کلمات کلیدی
تشخیص اشیا - تشخیص چهره - ادراکپریشی انجمنی بصری -
پیش نمایش مقاله
پیش نمایش مقاله مدارک و شواهد برای ادراک پریشی اختلال ادراکی بصری (prosop) : یک مطالعه مورد

چکیده انگلیسی

Associative visual agnosia is classically defined as normal visual perception stripped of its meaning [Archiv für Psychiatrie und Nervenkrankheiten 21 (1890) 22/English translation: Cognitive Neuropsychol. 5 (1988) 155]: these patients cannot access to their stored visual memories to categorize the objects nonetheless perceived correctly. However, according to an influential theory of visual agnosia [Farah, Visual Agnosia: Disorders of Object Recognition and What They Tell Us about Normal Vision, MIT Press, Cambridge, MA, 1990], visual associative agnosics necessarily present perceptual deficits that are the cause of their impairment at object recognition Here we report a detailed investigation of a patient with bilateral occipito-temporal lesions strongly impaired at object and face recognition. NS presents normal drawing copy, and normal performance at object and face matching tasks as used in classical neuropsychological tests. However, when tested with several computer tasks using carefully controlled visual stimuli and taking both his accuracy rate and response times into account, NS was found to have abnormal performances at high-level visual processing of objects and faces. Albeit presenting a different pattern of deficits than previously described in integrative agnosic patients such as HJA and LH, his deficits were characterized by an inability to integrate individual parts into a whole percept, as suggested by his failure at processing structurally impossible three-dimensional (3D) objects, an absence of face inversion effects and an advantage at detecting and matching single parts. Taken together, these observations question the idea of separate visual representations for object/face perception and object/face knowledge derived from investigations of visual associative (prosop)agnosia, and they raise some methodological issues in the analysis of single-case studies of (prosop)agnosic patients.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.