In a new study, researchers suggest that tonight while you sleep, something amazing will happen within your brain. Your neurons will go quiet. A few seconds later , blood flow out of your head . Then, a watery liquid called cerebrospinal fluid (CSF) will flow in, washing through your brain in rhythmic, pulsing waves. The study is the first to illustrate that the brain's CSF pulses during sleep,and that these motions are closely tied with brain wave activity and blood flow. The research was conducted by a team from Boston University. Earlier studies have suggested that CSF flow and slow-wave activity both help flush toxic,memory impairing proteins from the brain. As people age, their brains often generate fewer slow waves. In turn, this could affect the blood flow in the brain and reduce the pulsing of CSF during sleep., leading to buildup of toxic proteins and a decline in memory abilities. Although researchers have tended to evaluate these processes separately, it now appea...
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