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Revista Cubana de Medicina

versão impressa ISSN 0034-7523versão On-line ISSN 1561-302X

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CACERES TOLEDO, María; MARQUEZ FERNANDEZ, Melba; PEREZ NELLAR, Jesús  e  CACERES TOLEDO, Odalis. Alexia sin agrafia en el infarto cerebral occipital. Rev cubana med [online]. 1998, vol.37, n.2, pp.112-118. ISSN 0034-7523.

A case of pure alexia without agraphia after en occipital cerebral infarction was presented. It clinically manifested with a bilateral amaurosis of 2 hours, followed by a marked difficulty for reading, which was interpreted by the patient as a visual deficit and by the ophthalmologists and optometrists as a presbyopia. The absence of the P-300 wave was proved in the study of the endogenous component of the event-related potentials (ERP) by using phonetic discrimination tasks and their normal record with graphic discrimination tasks. Thus, the cliniconeurophysiological diagnosis of pure alexia without agraphia was confirmed by this non-invasive method that studies the cerebral cognitive process.

Palavras-chave : DYSLEXIA, ACQUIRED [etiology]; CEREBRAL INFARCTION [complications]; EVENT-RELATED POTENTIALS, P 300.

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