| Project/Area Number |
63510044
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Psychology
|
|---|
| Research Institution | University of Tsukuba |
|---|
Principal Investigator |
IWASAKI Tsuneo University of Tsukuba, Institute of Psychology, Professor, 心理学系, 教授 (70092509)
|
|---|
| Project Period (FY) |
1988 – 1990
|
| Project Status |
Completed (Fiscal Year 1990)
|
| Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1990: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1989: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1988: ¥1,100,000 (Direct Cost: ¥1,100,000)
|
|---|
| Keywords | aged animals / aged rats / learning / memory / discrimination learning / place learning / delayed matching-to-sample learning |
|---|
| Research Abstract |
This study was aimed to clarify characteristics of learning and memory in aged animals. Aged (14-27months old) rats were compared with youn g(2-3 months old) rats on their learning and memory performances in the following tasks.
(1) Position (right vs. lef) discrimination learning in Grice box.
(2) Brightness (black vs. white) discrimination learning in Grice box.
(3) Place learning in 8-arm radial-arm maze.
(4) Delayed matching-to-sample learning and memory test in trough T-maze.
(5) Delayed matching-to-sample learning and memory test in trough Y-maze.
(6) Delayed matching-to-sample learning and memory test in elevated Y-maze.
The results indicated that the aged rats showed deficits in learning and memory Performances, especially on the tasks in which sufficient discrimination cues were not available. It should be noted, however, that individual differences were much greater in aged than in young animals.
|
