دانلود مقاله ISI انگلیسی شماره 39742
عنوان فارسی مقاله

اختلال انتخابی در قدردانی و تشخیص روشنایی:ادراکپریشی روشنایی؟

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
39742 2009 9 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
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عنوان انگلیسی
A selective deficit in the appreciation and recognition of brightness: Brightness agnosia?
منبع

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

Journal : Cortex, Volume 45, Issue 7, July–August 2009, Pages 816–824

کلمات کلیدی
ادراکپریشی روشنایی - تبعیض درخشندگی - تأیید درخشندگی
پیش نمایش مقاله
پیش نمایش مقاله اختلال انتخابی در قدردانی و تشخیص روشنایی:ادراکپریشی روشنایی؟

چکیده انگلیسی

We report a patient with extensive brain damage in the right hemisphere who demonstrated a severe impairment in the appreciation of brightness. Acuity, contrast sensitivity as well as luminance discrimination were normal, suggesting her brightness impairment is not a mere consequence of low-level sensory impairments. The patient was not able to indicate the darker or the lighter of two grey squares, even though she was able to see that they differed. In addition, she could not indicate whether the lights in a room were switched on or off, nor was she able to differentiate between normal greyscale images and inverted greyscale images. As the patient recognised objects, colours, and shapes correctly, the impairment is specific for brightness. As low-level, sensory processing is normal, this specific deficit in the recognition and appreciation of brightness appears to be of a higher, cognitive level, the level of semantic knowledge. This appears to be the first report of ‘brightness agnosia’.

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