Alexia without agraphia
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چکیده
In the late 19th century, Déjérine first described this entity in a man with associated incomplete right homonymous hemianopia from a lesion of the left fusiform and lingual gyri. He subsequently deduced that the left angular gyrus stored the visual representation of words (needed for reading and writing), and that disconnecting the visual inputs of both hemispheres from the left angular gyrus could disrupt reading but leave writing intact (Dejerine 1892). These conclusions were affirmed in 1965 by Geschwind in his series of cerebral disconnection theories (Geschwind 1965).
منابع مشابه
Alexia without agraphia in a postpartum eclamptic patient with factor V Leiden deficiency.
We present a case of eclampsia complicated by alexia without agraphia. To our knowledge, this syndrome has never before been described in the literature.
متن کاملAlexia without agraphia associated with right occipital lesion.
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.
متن کاملTranstentorial herniation with posterior cerebral artery territory infarction. A new mechanism of the syndrome of alexia without agraphia.
A 39-year-old male developed a right homonymous hemianopsia and alexia without agraphia following emergency surgery for hemorrhage into a left frontal tumor. A computerized tomographic (CT) scan demonstrated low density areas in the left frontal region and in the territory of the left posterior cerebral artery. The alexia without agraphia syndrome appeared to result from compression of the left...
متن کاملAlexia without agraphia.
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...
متن کاملAlexia with and without agraphia: an assessment of two classical syndromes.
BACKGROUND Current cognitive models propose that multiple processes are involved in reading and writing. OBJECTIVE Our goal was to use linguistic analyses to clarify the cognitive dysfunction behind two classic alexic syndromes. METHODS We report four experiments on two patients, one with alexia without agraphia following occipitotemporal lesions, and one with alexia with agraphia from a le...
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