Older adults preserve accuracy but not precision in explicit and implicit rhythmic timing

Area of Science:

• Neuroscience
• Cognitive Psychology
• Gerontology

Background:

• Aging is associated with neurophysiological and cognitive decline.
• The impact of aging on temporal processing remains unclear.
• Existing research often conflates timing deficits with memory and attention impairments.

Purpose of the Study:

• To investigate age-related changes in temporal processing.
• To determine if timing deficits are independent of memory and attention.
• To examine the effect of task difficulty on age-related timing performance.

Main Methods:

• Two studies involving rhythmic timing tasks (explicit and implicit).
• Participants distinguished regular from irregular sequences.
• A dual-task paradigm was used to manipulate difficulty in Study 2.

Main Results:

• Accuracy in implicit timing tasks was preserved in older adults.
• Older adults showed increased performance noise in both explicit and implicit tasks.
• Increased task difficulty amplified age-related differences in temporal processing.

Conclusions:

• Temporal processing may decline with age, potentially independent of memory and attention.
• Older adults exhibit less precise temporal judgments, especially under demanding conditions.
• Age-related timing deficits are magnified by increased cognitive load.