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The effects of normal aging on source memory for odors
Paul E Gilbert1, Eva Pirogovsky, Sally Ferdon
1Department of Psychology, San Diego State University, CA 92120, USA.
Summary
Older adults show deficits in source memory for odors but not item memory. This suggests olfactory source memory is sensitive to age-related cognitive decline.
Area of Science:
- Cognitive Neuroscience
- Gerontology
- Olfactory Perception
Background:
- Memory functions, including source and item memory, can decline with age.
- Olfactory stimuli present a unique sensory modality for memory research.
Purpose of the Study:
- To investigate age-related differences in source and item memory for olfactory stimuli.
- To determine if olfactory memory tasks are sensitive to cognitive aging.
Main Methods:
- Healthy older (65+) and young adults participated.
- Participants identified the gender of the odor source (source memory) and recognized previously presented odors (item memory).
Main Results:
- Older adults demonstrated significantly impaired source memory for odors compared to young adults.
- No significant differences were found in odor item memory between the age groups.
Conclusions:
- Olfactory source memory is particularly vulnerable to age-related cognitive changes.
- These findings highlight potential neural mechanisms underlying memory decline in aging individuals.