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Spatial Navigation in the Elderly with Alzheimer's Disease: A Cross-Sectional Study
Marcos Zanco1, Jessica Plácido1, Valeska Marinho1
1Institute of Psychiatry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
Journal of Alzheimer'S Disease : JAD
|December 4, 2018
Summary
Alzheimer's disease patients show significant spatial navigation deficits. Performance on the Floor Maze Test is linked to memory, cardiorespiratory fitness, and overall cognitive function.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Gerontology
Background:
- Spatial navigation is crucial for independence and is an early deficit in Alzheimer's disease (AD).
- Understanding these navigation impairments is vital for maintaining quality of life in aging populations.
Purpose of the Study:
- To compare spatial navigation in healthy elderly individuals and AD patients using the Floor Maze Test (FMT).
- To identify cognitive and functional factors associated with spatial navigation performance in AD.
Main Methods:
- The Floor Maze Test (FMT) assessed spatial navigation in 24 AD patients and 36 healthy controls.
- Cognitive functions were evaluated using the Mini-Mental State Examination (MMSE), verbal fluency, digit span, and Rey Auditory Verbal Learning Test (RAVLT).
- Functional capacity was assessed via the Senior Fitness Test.
Main Results:
- AD patients were significantly slower and made more errors on the FMT compared to controls.
- Planning Time (PT) correlated with cardiorespiratory resistance and delayed memory (RAVLT).
- Immediate Maze Time (IMT) and Delayed Maze Time (DMT) were associated with global cognitive status (MMSE) and delayed memory.
Conclusions:
- Alzheimer's disease patients exhibit marked spatial navigation deficits.
- Cardiorespiratory capacity, memory, and global cognitive function influence FMT performance in AD.
- Future research should explore the impact of physical exercise interventions on spatial navigation in AD.