|
内容記述 |
The Aims of this Study: In order to research the effects of acceleration upon the living organism, especially upon its mental functions through maze learning, a series of experiment were carried in the following way. The Method and Procedure: We divided 40 albino rats, (20 male and 20 female, all their life in 2 to 6 mcnths) into four groups A, B, C, D. Group A was the control one, which had no acceleration. On the other hand, group B was accelerated in the line of possitive gravitation (+g), group C in +g replaced by-g later; gsoup D in -g. The properties of our centrifuge were conformed to the following manner, γ=80cm., γ.p.m.=120p.m, mass of acceleration=13g. As for the durations of acceleration, groups B and D were individually exposured for 60 seconds, group C for 30 seconds in +g, and in -g separately. The experiment was carried on from early September to late October, 1941. We had the animals accelerate in the afternoon, and had them learn the maze in the next morning. The experiment series was devided into three ones. In the first series, we had the animals learn the prepared maze (see fig. 1 in Japanese col.) for 18 days, and rest for a week following last day, and then do the second series from the 26th day for 10 days. We used the same maze in the second series as was used in the first, and after determining the loss of learning during a week's rest, had them continue to learn a maze which is based upon the first and the second series, but a little different from them. We call it the third series (see fig. 2). Results: The 1st series: We could confirmed the progress in the learning during the first and the second days in all groups except group D which experienced only the (-) acceleration. Group D took more time to reach the goal and made more errors comparing with the other groups. There is little difference in results between group C, D and the control group. The 2nd series: As for retention effects, group C resulted the worse and group D, the worst. The 3rd series: In the similar maze learning, group D resulted very badly and we found little difference between others. |
SA4148648.pdf (1.6 MB)
