Hemispatial visual defect in Alzheimer's disease
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Updated: Jul 4, 2026

The 4 Mountains Test: A Short Test of Spatial Memory with High Sensitivity for the Diagnosis of Pre-dementia Alzheimer's Disease
Published on: October 13, 2016
Haruhiko Oda1, Shingo Ohkawa, Kiyoshi Maeda
1Department of Psychiatry and Neurology, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuou-ku, Kobe, Japan. oda72742@yahoo.co.jp
Abstract:
We describe a 56-year-old woman with Alzheimer's disease with left hemispatial neglect and left homonymous hemianopsia with macular sparing considered a manifestation of Alzheimer's disease resulting from severe degenerative change in the right primary visual cortex. Hemispatial neglect normally results from brain damage to the right cerebral hemisphere. Homonymous hemianopsia is commonly the result of localized brain disease, especially cerebral infarction or hemorrhage. To our knowledge, a patient with Alzheimer's disease showing hemispatial neglect and homonymous hemianopsia with macular sparing has not previously been reported.
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