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Aging and electrocortical response to error feedback during a spatial learning task.

Karen J Mathewson¹, Jane Dywan, Peter J Snyder

¹Department of Psychology, Brock University, St. Catharines, Ontario, Canada.

Psychophysiology

|August 30, 2008

Summary

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Older adults show reduced anterior cingulate cortex (ACC) activation and smaller feedback-related negativities (FRNs) when processing errors, indicating age-related decline in performance monitoring despite some continued ACC contribution.

Area of Science:

Cognitive Neuroscience
Aging Research
Neuropsychology

Background:

The anterior cingulate cortex (ACC) is crucial for executive functions and performance monitoring.
Aging is associated with changes in cognitive abilities and neural processing, particularly in executive functions.

Purpose of the Study:

To investigate age-related differences in neural responses to error feedback.
To examine the role of the ACC in performance monitoring in older and younger adults.

Main Methods:

Collected event-related potentials (ERPs) from older and younger adults using an adapted Groton Maze Learning Test.
Utilized LORETA source localization to identify neural activation patterns associated with feedback processing.
Analyzed feedback-related negativities (FRNs) and feedback P3 components.

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Main Results:

Older adults made more errors and exhibited smaller FRNs compared to younger adults.
Younger adults showed ACC-focused neural activation for FRNs, stronger for negative feedback.
Older adults displayed less intense and differentiated ACC activation, though FRN amplitude correlated with error rate on difficult mazes.

Conclusions:

Data suggest a selective age-related decline in ACC response to error feedback.
The ACC continues to contribute to performance monitoring in aging, particularly in challenging tasks.
Age-related differences in ERPs like FRN reflect altered neural mechanisms of error processing.