dolphins是什么意思？

During deep sleep, the participants' brains behaved in a similar manner seen in birds and dolphins.

During deep sleep,the participants' brains behaved in a similar manner seen in birds and dolphins.

She also knew from previous work conducted on birds and dolphins that these animals put half of their brains to sleep at a time so that they can rest while remaining alert enough to avoid predators.

One of the most interesting experiments with dolphins must be one done by Doctor Jarvis Bastian.

Well, first of all, he kept the two dolphins together in the same tank and taught them to press levers whenever they saw a light

If the light flashed on and off several times, the dolphins were supposed to press the left-hand lever followed by the right-hand one.

If the light was kept steady, the dolphins were supposed to press the levers in reverse order

In the second stage, Doctor Bastian separated the dolphins into two tanks.

But in order to get their fish, both dolphins had to press the levers in the correct order

Well, amazingly enough, the dolphins achieved a 100 % success rate.

What were the dolphins supposed to do when they saw a steady light

To test how responsive dolphins are to various signals.

To see if dolphins can learn to communicate with each other

To examine how long it takes dolphins to acquire a skill.

Both dolphins were put in the same tank

A previous study noted that dolphins always 34 consciously control their breathing.

But, as the human study suggests, another reason for dolphins keeping their eyes open during sleep is that they can look out for predators while asleep.

For example, dolphins, as well as other marine animals, shut down one hemisphere of the brain when they go to sleep.