People are brainwashed when they sleep

Sleep is a common natural resting state in mammals, birds and fish, even in invertebrates such as flies Sleep is characterized by reduced active body movement, reduced response to external stimuli, increased assimilation (production cell structure), and reduced levels of dissimilation (decomposition cell structure) "Brainwashing" has scientific basis Researchers in the United States recently reported that they used magnetic resonance imaging and other technologies to observe the heads of some volunteers, and found that the cerebrospinal fluid would help flush the brain rhythmically after falling asleep, and remove the metabolites in the brain Researchers from Boston University and other institutions published a paper in the new issue of science, saying that they recruited 13 volunteers and used technology such as MRI to observe their brain activity during sleep It turns out that when people fall asleep, the neurons in the brain calm down, and then blood flows out of the brain, and the cerebrospinal fluid flows in, and helps flush the brain rhythmically This may be the first time that images of rhythmic flow of CSF during sleep have been obtained in humans, the researchers said "We've known for some time that neurons have radio activity," said Laura Lewis, assistant professor of Biomedical Engineering at Boston University, who participated in the study "But before that, we didn't realize that CSF actually fluctuated." The new research is expected to help researchers further understand autism, Alzheimer's and other sleep related diseases, as well as age-related brain damage