2 Answers

  1. During REM sleep (when we dream), the brain actually works. But this is normal and this phase is necessary. It is believed that REM sleep plays an important role in the processes of memory, assimilation of knowledge gained during the day, and ordering of information. Therefore, when a person is engaged in solving a problem and can not solve it in any way, often you just need to get a good night's sleep. In a dream, the brain will sort out the knowledge on the shelves, provide them with labels, build connections between them, and after waking up, the task may be much simpler (or even solved). As they say, the morning of the evening is more complicated.

  2. It is ok. If you do not go into details, then in a dream, the phases of “slow” and “fast” sleep alternate several times a night. According to experiments on people (woke up and asked), during the “slow” there are no dreams, during the “fast” they are always there (but not always and not all are remembered if you do not wake up). Then the evil scientists started torturing the mice. They woke up the mice as soon as one phase began and did not interfere with sleep during the other. Mouse deprived of “slow” sleep survived. Deprived of “fast” died in 40 days. But she probably didn't dream either.

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