How do we know you’ve fallen asleep and are actually sleeping? A polysomnogram is the gold standard test where we monitor your brain waves in addition to your breathing, movements, oxygen level, and more to determine how long you’re sleeping, your stages of sleep, and any sleep-related issues. 💤🧠 Last week was the start of winter quarter’s famous Stanford undergraduate course “Dement’s Sleep and Dreams” where we built a pop-up sleep lab. A student volunteered to try to fall asleep during class while we monitored his brain waves to change from alpha rhythm (awake eyes closed) to N1 (first stage of sleep) and then transition to N2 (second stage of sleep). Can you identify the changing brain waves? 😴 This course is special to me having been a Head TA to now being an instructor for the class. We teach students the critical role of sleep for your performance, health, and ultimately your life. Students become sleep health advocates, gain skills to identify common sleep disorders that co...