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Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function

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Spatial navigation in young versus older adults.

Ivana Gazova¹, Jan Laczó¹, Eva Rubinova²

¹Memory Clinic, Department of Neurology, 2nd Faculty of Medicine, Charles University in Prague and Motol University Hospital Prague, Czech Republic ; International Clinical Research Center, St. Anne's University Hospital Brno Brno, Czech Republic.

Frontiers in Aging Neuroscience

|January 7, 2014

Summary

Older adults, especially those over 71, show deficits in world-centered (allocentric) navigation, not body-centered (egocentric) navigation. This age-related spatial navigation decline may help distinguish normal aging from early Alzheimer's disease.

Keywords:

Alzheimer’s disease aging allocentric navigation egocentric navigation gender hippocampus spatial learning spatial navigation

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Area of Science:

Neuroscience
Gerontology
Cognitive Psychology

Background:

Aging is associated with brain changes, potentially affecting spatial navigation, particularly allocentric (world-centered) navigation.
Mild spatial navigation deficits in older adults may be linked to medial temporal lobe changes.
Understanding age-related navigation changes is crucial for differentiating normal aging from neurodegenerative conditions.

Purpose of the Study:

To compare allocentric and egocentric navigation and learning in young and older adults.
To assess the influence of age and gender on spatial navigation abilities.
To investigate the specific pattern of navigation deficits in aging.

Main Methods:

Recruited healthy young (18-26) and older adults (60-84), stratified into two age groups.
Utilized a real-space human analog of the Morris Water Maze to assess allocentric and egocentric navigation.
Analyzed spatial navigation and learning performance across eight trials, excluding the first to mitigate rebound effects.

Main Results:

Older adults aged 71-84 demonstrated significant allocentric navigation deficits compared to young adults (p < 0.001).
No significant differences were found in egocentric navigation or spatial learning across age groups.
Age showed a linear and quadratic effect on allocentric navigation in older adults, but not on egocentric navigation.
No gender-based differences in spatial navigation or learning were observed.

Conclusions:

Spatial navigation deficits in older age appear specific to allocentric (world-centered) navigation.
Egocentric (body-centered) navigation and learning remain preserved in healthy aging.
This distinct pattern of allocentric navigation impairment may serve as an early indicator differentiating normal aging from prodromal Alzheimer's disease.