抄録
The present paper reviewed recent studies on the cognitive functions of aged monkeys as an aging model of cognition. It has been questioned that the aged monkeys did not always show substantial decline in cognitive abilities in some tasks. I could summarize the cognitive deficits in aged monkeys as the following points such as in spatial cognition task, temporal integration abilities of memory, learning set, and inability of inhibition. It became apparent that the aged monkeys took different behavioral strategies from the young in the other intact tasks. The better performances in aged monkeys could be attributable to such behavioral complement. Therefore, not only the ultimate performance in cognitive tasks, but the behavioral observations on learning process will be important to investigate the ability of aged monkeys. The longitudinal and multi-task studies will also be required to reach into the deep knowledge of cognition in aged monkeys.
