Emotional arousal and recognition memory are differentially reflected in pupil diameter responses during emotional memory for negative events in younger and older adults


A better memory for negative emotional events is often attributed to a conjoint impact of increased arousal and noradrenergic modulation. A decline in noradrenergic modulation (NA) during ageing is well documented but its impact on memory function during ageing is unclear. Using pupil diameter (PD) as a proxy for noradrenergic modulation, we examined age differences in memory for negative events in younger (18-30 years) and older (62-83 years) adults based upon a segregation of early arousal to negative events, and later retrieval related PD responses.πŸ“

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