RESUMO

INTRODUCTION AND CLINICAL CASE: A case of pure alexia, secondary to an occipital cerebral infarct, is presented, which initially appearing with bilateral amaurosis of two hours of duration, following by a significant difficulty to read, and according to patient, was a deficit to near vision and by criteria of ophthalmologists and optometrists was a presbyopia. Authors identified a lack of P-300 wave in study of endogenous component of events related potentials (ERP), to task of phonetic discrimination, and its normal registry to task of graphic discrimination. CONCLUSION: Therefore, we confirm the cliniconeurophysiologic diagnosis of a pure alexia without agraphia, by means of this non-invasive method studying cerebral cognitive process.

Assuntos

Dislexia Adquirida/diagnóstico , Infarto Cerebral/complicações , Infarto Cerebral/diagnóstico , Dislexia Adquirida/etiologia , Potenciais Evocados , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade