Older Adults Benefit from Symmetry, but Not Semantic Availability, in Visual Working Memory

Area of Science:

• Cognitive Psychology
• Neuroscience
• Gerontology

Background:

• Visual working memory shows significant age-related decline.
• Younger adults typically benefit from perceptual cues like symmetry and semantic availability.
• Investigating if older adults can leverage these cues is crucial for understanding cognitive aging.

Purpose of the Study:

• To determine if older adults can benefit from visual symmetry and semantic availability in visual working memory tasks.
• To compare the performance of younger and older adults on tasks with varying perceptual and semantic features.
• To explore the neural mechanisms underlying age-related differences in visual working memory.

Main Methods:

• Two experiments using visual matrix pattern tasks were conducted.
• Experiment 1 manipulated the symmetry of visual arrays (random, vertical, horizontal, diagonal).
• Experiment 2 manipulated the semantic availability (low vs. high) of visual arrays, utilizing long-term memory (LTM).

Main Results:

• Both younger and older adults improved performance with visual symmetry.
• Older adults showed impaired performance on tasks with low and high semantic availability.
• Only younger adults significantly benefited from semantic availability, suggesting an age-related deficit in recruiting LTM.

Conclusions:

• Older adults can utilize the perceptual cue of symmetry to enhance visual working memory performance.
• Older adults demonstrate a reduced ability to recruit visual semantics (LTM) to support working memory compared to younger adults.
• These findings highlight specific cognitive strategies that remain accessible and those that decline with age in visual working memory.