特别广播英语第 22 课：Short-term Memory 短时记忆-2

Psychologists study memory and learning with both animal and human subjects. 心理学家们以动物和人这二者做测试对象分别研究了记忆和学习的情况。

The two experiments here show how short-term memory has been studied. 这里这两类试验都表明了研究短时记忆的情况。

Dr. Hunter studied short-term memory in rats. 亨特博士研究了大老鼠的短时记忆。

He used a special apparatus which had a cage for the rat and three doors. 他用了一种特殊装置，这种装置上有个鼠笼和三扇门。

There was a light in each door. First the rat was placed in the closed cage. 每扇门上都有一盏灯。首先，把大老鼠放到一个关着的鼠笼里。

Next, one of the lights was turned on and then off. 接着，把其中一盏灯打开然后再关上。

There was food for the rat only at this door. 只有在这扇门那里才有给老鼠听的东西。

After the light was turned off, the rat had to wait a short time before it was released form its cage. 在把灯关掉以后，必须让这个老鼠等候一段短时期，这才把它从鼠笼中放出去。

Then, if it went to the correct door, it was rewarded with the food that was there. 接下来，如果这个老鼠走对了门，那么，门那里摆着的食物就是对他的奖赏。