Sci­en­tists from the Uni­ver­si­ty of Cal­i­for­nia in Los Ange­les believe that the pur­pose of sleep changes as you get old­er. In infants, dur­ing sleep, the “build­ing” of the brain occurs, while in adults these process­es stop, and sleep is need­ed to clear the brain of “garbage”.

Experts from var­i­ous fields of sci­en­tif­ic knowl­edge (neu­ro­bi­ol­o­gy, math­e­mat­ics, sta­tis­tics) ana­lyzed more than 60 human and ani­mal stud­ies. It turned out that in all species on Earth there is a reduc­tion in REM sleep as they grow old­er. Dur­ing the first 2.5 years of life in humans (and equiv­a­lent peri­ods of time in oth­er ani­mals), its max­i­mum decrease occurs.

For exam­ple, new­borns spend about half the time in REM sleep while they sleep. By the age of 10, this fig­ure is reduced to 25%, and in peo­ple over 50 years old — up to 15%.

Stud­ies have shown that in the first 2.5 years, the child’s brain grows very quick­ly. It is dur­ing the REM phase, when a per­son sees vivid dreams, that the young brain is busy form­ing new synaps­es (con­tacts between neu­rons), build­ing and devel­op­ing nerve net­works. And after reach­ing 2.5 years, the body switch­es from build­ing the brain to main­tain­ing its work and repair­ing dam­age, includ­ing clean­ing the brain of bio­log­i­cal “garbage”. Lack of sleep does not ful­ly restore the brain, which increas­es the risk of devel­op­ing neu­rode­gen­er­a­tive dis­eases.

От Yraa

Добавить комментарий