Age moderates association between set shifting and complex rhythm performance in healthy adults

Area of Science:

• Cognitive Neuroscience
• Gerontology
• Auditory Perception

Background:

• Musical rhythm performance is linked to cognitive function in older adults.
• The relationship between complex rhythm performance and cognition requires further investigation.

Purpose of the Study:

• To compare rhythm performance between younger and older adults.
• To investigate the association between executive functions (set-shifting, working memory, nonverbal reasoning) and processing speed with rhythm performance in older adults.

Main Methods:

• Forty-nine healthy participants (25 young, 24 older adults) underwent neuropsychological testing.
• Participants performed 30 musical rhythm exercises of increasing complexity.
• Cognitive assessment included measures of processing speed, working memory, set-shifting, and nonverbal reasoning.

Main Results:

• A significant effect of rhythm complexity and age on timing error was observed, with older adults performing worse.
• Set-shifting ability was a significant factor in older adults' timing errors.
• Rhythm performance in older adults was sensitive to baseline executive functioning.

Conclusions:

• Older adults are less accurate than younger adults in performing musical rhythms.
• Executive functioning, particularly set-shifting, plays a role in age-related differences in rhythm performance.
• Further research into neural mechanisms underlying rhythm performance and cognitive relationships is warranted.