How context shapes neural decision processing across the lifespan: evidence from an event-related potential study

Area of Science:

• Neuroscience
• Cognitive Aging
• Decision-Making

Background:

• Aging impacts neural mechanisms of decision-making.
• Understanding these changes is crucial for promoting adaptive choices across the lifespan.

Purpose of the Study:

• Examine how age and decision context influence neural processes before and after decisions.
• Investigate age-related changes in neural responses during decision-making tasks.

Main Methods:

• Recorded EEG in 75 healthy adults (20-80 years) performing risk, social, and uncertainty versions of the Monetary Incentive Delay task.
• Analyzed event-related potentials (ERPs) including Cue-P3, CNV, Target-P3, FRN, and Feedback-P3.

Main Results:

• Older adults showed reduced Cue-P3 and Target-P3 amplitudes.
• Age did not interact with context, indicating preserved sensitivity to social and learning demands.
• Social and uncertainty contexts enhanced neural responses compared to risk context across age groups.

Conclusions:

• Aging selectively reduces affective processing of incentives.
• Neural responsiveness to contextual factors remains robust in older adults.
• Socially meaningful and learning-rich environments may sustain decision engagement in later life.