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Delayed response task performance as a function of age in cynomolgus monkeys (Macaca fascicularis)
H S Darusman1,2, J Call3, D Sajuthi4
1Department of Experimental Medicine, University of Copenhagen and National University Hospital, Copenhagen, Denmark.
Primates; Journal of Primatology
|November 20, 2013
Summary
Older cynomolgus monkeys exhibit significantly poorer performance on memory tasks compared to younger ones. This age-related cognitive decline impacts visuo-spatial memory, memory consolidation, and executive functions.
Area of Science:
- Neuroscience
- Primatology
- Cognitive Aging
Background:
- Age-associated memory impairment is a growing concern.
- Non-human primates offer valuable models for studying cognitive aging.
Purpose of the Study:
- To compare cognitive performance across different age groups of cynomolgus monkeys.
- To investigate age-related changes in memory and executive functions.
Main Methods:
- Utilized three established memory tests in young, middle-aged, and old cynomolgus monkeys (Macaca fascicularis).
- Assessed performance on delayed response tasks with varying delay intervals.
Main Results:
- Older monkeys (above 20 years) performed significantly worse than younger age groups.
- Increased delay times exacerbated performance deficits in older monkeys.
- Impaired visuo-spatial memory, memory consolidation, and executive functioning were observed in older individuals.
Conclusions:
- Cynomolgus monkeys demonstrate age-related cognitive decline, particularly in memory and executive functions.
- Macaca fascicularis is a suitable model for studying cognitive aging and dementia-related disorders.
- Findings support the translational utility of this primate model for human age-associated memory impairment research.
