Visual neglet for far and near extra-personal space in humans

L. Pizzamiglio, S. Cappa, G. Vallar, P. Zoccolotti, G. Bottini, P. Ciurli, C. Guariglia, G. Antonucci

Research output: Contribution to journalArticle

Abstract

The possible dissociation of unilateral neglect in far and near extrapersonal space was systematically investigated using a modified version of the Wundt-Jastrow area illusion test. This task, which requires no motor response, has been shown to be sensitive to unilateral neglect. Stimuli were presented at two different distances (near and far) to a group of 70 patients with right hemispheric lesion (18 in acute and 52 in chronic stage). Twenty-eight patients evidenced unilateral neglect; that is, they displayed unexpected (i.e., contrary to the known illusory effect) responses when the stimuli were perceived as oriented toward the left side. However, performances in the two conditions were highly correlated and there were no individual instances of dissociation. These results suggest that the presence of a motor response may be necessary to show behavioral dissociations between different parts of extrapersonal space.

Original languageEnglish
Pages (from-to)471-477
Number of pages7
JournalCortex
Volume25
Issue number3
Publication statusPublished - 1989

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

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