Related Experiment Videos
Source memory in mild to moderate Alzheimer's disease
W P Goldman1, E Winograd, F C Goldstein
1Emory University, Atlanta, GA 30322.
Journal of Clinical and Experimental Neuropsychology
|February 1, 1994
Summary
Source memory, the ability to recall information
Area of Science:
- Cognitive Neuroscience
- Neurology
Background:
- Alzheimer's disease (AD) impacts memory functions.
- Assessing memory deficits in early AD is crucial for understanding disease progression.
Purpose of the Study:
- To investigate the preservation of source memory in individuals with mild to moderate Alzheimer's disease (AD).
- To differentiate between recall ability and source memory accuracy in AD patients.
Main Methods:
- Experiment 1: Compared AD patients and controls on recalling true and made-up facts and identifying memory sources.
- Experiment 2: Equated memory load by introducing a delay for controls, then assessed source memory for made-up facts.
Main Results:
- AD patients recalled fewer facts but accurately identified the source of remembered information.
- Both groups accurately distinguished between internally and externally acquired facts.
- Source memory for specific learning modalities (e.g., read vs. told) was at chance for both groups.
Conclusions:
- Source memory appears relatively preserved in the early stages of Alzheimer's disease.
- Findings suggest potential frontal-lobe involvement and highlight methodological challenges in assessing source memory in cognitive impairment.