Interconnected declines in audition vision and cognition in healthy aging

Area of Science:

• Gerontology
• Neuroscience
• Cognitive Psychology

Background:

• Age-related sensory declines (vision, hearing) are common.
• Interrelations between sensory and cognitive aging are not fully understood.
• Shared age-related characteristics are complex and may not show direct individual relationships.

Purpose of the Study:

• Investigate links between visual and auditory perceptual declines in healthy aging.
• Examine the relationship of these sensory declines to cognitive function.
• Test the hypothesis of a domain-general decline in perception.

Main Methods:

• Employed six psychophysical tasks for sensory perception.
• Utilized three cognitive tasks, including working memory.
• Recruited eighty healthy young and older adults.

Main Results:

• Older adults showed general declines in visual, auditory, and cognitive tasks compared to younger adults.
• Visual and auditory task performance significantly correlated in older adults, indicating domain-general perceptual decline.
• Working memory performance correlated with perceptual performance across age groups and sensory modalities.
• Perceptual performance decreased annually in older adults.

Conclusions:

• Sensory and cognitive declines in aging are interconnected and domain-general.
• Findings support a unified model of perceptual decline affecting multiple senses and cognition.
• Provides a basis for research aimed at enhancing sensory and cognitive function to promote healthy aging.