Alexia without agraphia associated with right occipital lesion.
نویسندگان
چکیده
A 78 year old, right handed man developed the syndrome of alexia without agraphia due to a right occipital thrombotic stroke. The cerebral dominance test strongly suggests that his right hemisphere is dominant. This is believed to be the first case of alexia without agraphia secondary to a right occipital lesion in a right handed person.
منابع مشابه
Agraphia for Kanji Resulting From a Left Posterior Middle Temporal Gyrus Lesion
OBJECTIVE To clarify whether agraphia or alexia occurs in lesions of the left posterior middle temporal gyrus. METHODS We assessed the reading and writing abilities of two patients with this lesion using kanji (Japanese morphograms) and kana (Japanese syllabograms). RESULTS Patient 1 first presented with pure alexia more impaired for kana after an infarction in the left middle and inferior ...
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Alexia without agraphia (also called pure alexia or word blindness) was the first of the disconnection syndromes (syndromes caused by disconnection of the right from the left cerebral hemisphere through interruption of the communication pathways between them) to be described. Déjerine in 1892 reported a patient who developed this syndrome after an infarct of the left occipital lobe and splenium...
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Pure alexia refers to an acquired disorder associated with the damage to medial occipitotemporal gyrus in the dominant hemisphere, which is also known as visual word form area (VWFA). VWFA is involved in rapid word recognition and fluent reading. Alexia without agraphia is a disconnection syndrome that occurs when the splenium is also damaged with the occipital lobe on a dominant side. We repor...
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Reading impairments of three alexia patients, two pure alexia and one alexia with agraphia, due to different lesions were examined quantitatively, using Kanji (Japanese morphogram) words, Kana (Japanese phonetic writing) words and Kana nonwords. Kana nonword reading was impaired in all three patients, suggesting that widespread areas in the affected occipital and occipitotemporal cortices were ...
متن کاملTransitory alexia without agraphia: a disconnection syndrome due to neurocysticercosis.
We describe a 65-year-old male who presented with acute onset inability to read, without any difficulty in writing. A clinical diagnosis of alexia without agraphia was made and the patient was subjected to routine investigations including contrast MRI. MRI showed a ring-enhancing lesion in left occipital area, suggestive of neurocysticercosis supported by quantitative enzyme-linked immunosorban...
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ورودعنوان ژورنال:
- Journal of neurology, neurosurgery, and psychiatry
دوره 40 3 شماره
صفحات -
تاریخ انتشار 1977