A Glimpse at the Glymphatic System
Sleep science is pretty new. Compared with other medical specialties, it’s just a baby. Prior to the 1950s, studies about human sleep were rarely being pursued. Isn’t that amazing? We’ve learned quite a lot about the biological mechanisms of sleep since the mid-20th century. REM sleep has been studied and documented. The circadian rhythm, first observed and studied almost 300 years ago, has been explored in-depth. Doctors identified obstructive sleep apnea and other sleep disorders, and they began investigating effective treatments to help their patients. But the questions, “What is sleep?” and “Why do we sleep?” have remained somewhat of …