The disturbances of object vision and spatial vision in alzheimer’s disease

Misato Fujimori, Toru Imamura, Hikari Yamashita, Nobutsugu Hirono, Etsuro Mori

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


Thirty-one patients with mild-to-moderate Alzheimer’s disease (AD) underwent a test battery of complex visual tasks. We assessed the scores using a principal-factor analysis to elucidate the underlying deficits. There were three independent factors: The first factor included the tasks of identifying and comparing forms of visual stimuli. The second factor consisted of digit span and digit symbol tasks, and the third factor consisted of a specified visual counting task. We considered these three factors as representing the dysfunctions of object recognition, general attention and spatial recognition, respectively. These results underline the disturbances of the two visual systems, object vision and spatial vision, in early-AD patients.

Original languageEnglish
Pages (from-to)228-231
Number of pages4
JournalDementia and geriatric cognitive disorders
Issue number4
Publication statusPublished - 1997 Jan 1


  • Alzheimer’s disease
  • Object vision
  • Spatial vision
  • Visuocognitive disturbance

ASJC Scopus subject areas

  • Geriatrics and Gerontology
  • Cognitive Neuroscience
  • Psychiatry and Mental health


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