0000000000607586

AUTHOR

Burgess N

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IMPAIRED ALLOCENTRIC SPATIAL MEMORY UNDERLYNG TOPOGRAPHICAL DISORIENTATION

2006

The cognitive processes supporting spatial navigation are considered in the context of a patient (CF) with possible very early Alzheimer's disease who presents with topographical disorientation. Her verbal memory and her recognition memory for unknown buildings, landmarks and outdoor scenes was intact, although she showed an impairment in face processing. By contrast, her navigational ability, quantitatively assessed within a small virtual reality (VR) town, was significantly impaired. Interestingly, she showed a selective impairment in a VR object-location memory test whenever her viewpoint was shifted between presentation and test, but not when tested from the same viewpoint. We suggest t…

Activities of Daily Living/psychology Aged Alzheimer Disease/diagnosis Alzheimer Disease/physiopathology Alzheimer Disease/psychology Animals Disability Evaluation Disease Progression Early Diagnosis Female Hippocampus/pathology Hippocampus/physiopathology Humans Memory/physiology Memory Disorders/diagnosis Memory Disorders/physiopathology Memory Disorders/psychology Middle Aged Models Neurological Neuropsychological Tests Orientation/physiology Space Perception/physiology Verbal Behavior/physiologySettore M-PSI/02 - Psicobiologia E Psicologia Fisiologica
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