Age-related differences in visual encoding and response strategies contribute to spatial memory deficits

Area of Science:

• Cognitive Neuroscience
• Human Aging Research
• Spatial Cognition

Background:

• Successful navigation depends on spatial memory and object recognition across various viewpoints.
• The hippocampus, crucial for these abilities, is vulnerable to age-related decline.
• Limited understanding exists regarding how aging affects spatial configuration recognition strategies.

Purpose of the Study:

• To investigate the impact of aging on spatial encoding and response strategies for recognizing object locations.
• To compare young and older adults' performance in a spatial recognition task with varying perspectives.

Main Methods:

• Participants encoded object locations in a virtual room presented on a screen.
• A second image of the room was shown from the same or a different perspective for location judgment.
• Diffusion modeling and gaze pattern analysis were employed to assess response strategies and visual attention.

Main Results:

• Older adults exhibited greater difficulty than younger adults in the spatial recognition task.
• Perspective shifts impaired performance in both age groups.
• Older adults employed a more conservative response strategy and broader visual attention during encoding compared to younger adults.

Conclusions:

• Aging is associated with diminished spatial processing abilities.
• Older adults adopt a more conservative decision-making style and utilize room-based cues for spatial memory.
• Younger adults prioritize encoding spatial relationships between object clusters.