5 functions that the brain performs during sleep
So what does the brain do in a dream?
1. Makes decisions
A study published in the journal Current Biology suggests that the brain is more than capable of making decisions during sleep. Participants in this study were asked to sort words into two categories at the touch of a button, and during the tests they were allowed to fall asleep. However, the experiment continued in the dream - the participants' brains were able to make decisions even after the body went into sleep.
2. Sorts memories
In a dream, the brain processes new memories, checks connections with old ones, and sorts memory so that a person does not forget the necessary moments. According to Dr. Matthew Walker from the University of California, if a person plays the piano after a healthy sleep and sleeps another eight hours the next night, then the lesson he plays is reproduced 20-30% better than when he tests his knowledge immediately after class.
3. Creates associations
During sleep, the brain builds associative connections between seemingly unconnected things. This can lead to unusual ideas or a deeper understanding of the world. Therefore, unexpectedly original ideas that sometimes arise in the head are not so spontaneous.
4. Get rid of toxins
A series of studies show that in a dream the brain of mice is cleansed of neurodegenerative cells and toxins, an increase in the concentration of which can lead to the development of Alzheimer's and Parkinson's diseases.
5. Is trained in physical labor
During the REM sleep phase, new information on the motor function of the body is transmitted from the cerebral cortex, which is also responsible for motility, to the temporal lobe. This helps us to “comprehend” and more effectively perform tasks related to physical activity.