RESUMEN
Hemiplegic stroke patients may have abnormal awareness or perception of the affected limb (s). For example, patients may experience their limb as not belonging to them (asomatognosia) or attribute their own body parts to other persons (somatoparaphrenia). Disturbed sensation of limb ownership (asomatognosia, somatoparaphrenia) for the hemiplegic limb has been reported in patients with right insula lesion. We report a case of a 70-year-old right handed female who had somatoparaphrenia and neglect dyslexia after right posterior cerebral artery and posterior corpus callosal infarction. Additionally, she showed visual defect, dyschromatopsia, and hemispatial neglect
Asunto(s)
Anciano , Femenino , Humanos , Dislexia , Extremidades , Mano , Cuerpo Humano , Infarto , Infarto de la Arteria Cerebral Posterior , Propiedad , Trastornos de la Percepción , Arteria Cerebral Posterior , Sensación , Accidente CerebrovascularRESUMEN
BACKGROUND: Neglect dyslexia is a type of neglect syndrome, in which patients with unilateral hemisphere injury omit or misread the contralateral side of a text or the initial letters of a word. Hangul can be arrayed vertically (vertical reading, VR) as well as horizontally (horizontal reading, HR). Thus, HR and VR can be differentially affected in neglect dyslexia. We conducted an experiment in a 66 year-old woman who suffered from neglect dyslexia after a right cerebral infarction. We compared HR with VR in terms of error frequencies and patterns. METHODS: Stimuli for neglect dyslexia consisted of 227 words. The 227 words were written horizontally or vertically (total 554 words) and were pre-sented in random order. The patient was asked to read the words and the examiner recorded the patient's responses and reaction times. RESULTS: The differences in HR and VR were as follows: 1) the error frequency in HR (59.0%) was higher than the error frequency in VR (20.3%), 2) the most frequent error in HR was syllabic deletion (79.1%) whereas phonemic substitution (89.1%) predominated in VR, 3) the error rate was highest at the first syllabic position in HR whereas no position effect was noted in VR. CONCLUSIONS: Patients with neglect dyslexia make less error in VR than in HR. The neural processing of HR may be different from that of VR. VR may be an alternative reading strategy that may be useful during the recovery stage of neglect dyslexia.