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Source memory impairment in patients with frontal lobe lesions
J S Janowsky1, A P Shimamura, L R Squire
1Veterans Administration Medical Center, University of California, San Diego, La Jolla 92161.
Neuropsychologia
|January 1, 1989
Summary
Patients with frontal lobe lesions struggle with source memory, recalling facts but misattributing their origin. This highlights the frontal lobes' crucial role in contextual memory.
Area of Science:
- Cognitive Neuroscience
- Neuropsychology
Background:
- Memory involves recalling information (facts) and its context (source).
- Frontal lobe functions are critical for complex cognitive processes, including memory.
Purpose of the Study:
- To investigate memory for facts and source memory in patients with frontal lobe lesions.
- To compare memory performance between patients with frontal lobe lesions, elderly controls, and younger subjects.
Main Methods:
- Two experiments were conducted involving recall of recently learned facts and their sources.
- Participants included patients with frontal lobe lesions, age-matched elderly controls, and younger subjects.
Main Results:
- Frontal lobe patients recalled facts similarly to controls but made more source errors.
- Both frontal lobe patients and elderly controls showed more source errors than younger subjects.
Conclusions:
- The frontal lobes appear essential for associating learned facts with their learning context (source memory).
- Source memory impairment is observed in frontal lobe damage and aging, suggesting shared neural underpinnings.