The "altitudinal Anton's syndrome": Coexistence of anosognosia, blindsight and left inattention

A. Carota, F. Bianchini, L. Pizzamiglio, P. Calabrese

Research output: Contribution to journalArticle

Abstract

We describe a 69-year-old patient with superior altitudinal hemianopia who contentiously denied having any visual impairment after stroke in the lower banks of both calcarine fissures. Although the patient did not produce intentional responses to visual stimuli in the blind fields, he showed reduced reaction times to stimuli presented in the inferior visual fields when they were primed by identical stimuli in the superior blind fields. Furthermore he showed left extinction to the double stimulation and delayed reaction times for left unprimed stimuli in the inferior fields. Based on these findings we discuss the possibility that blindsight and right hemisphere damage might be both necessary conditions for denying bilateral blindness.

Original languageEnglish
Pages (from-to)157-163
Number of pages7
JournalBehavioural Neurology
Volume26
Issue number1-2
DOIs
Publication statusPublished - 2013

Keywords

  • altitudinal hemianopia
  • anosognosia
  • attention blindsight
  • Cortical blindness
  • right hemisphere damage

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Clinical Neurology
  • Neurology

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