🧠⚡😴

#rem sleep #brain activity #paradoxical sleep #active sleep #sleep stage

😴🧠📉

#deep sleep #SWS #NREM sleep #delta waves #sleep stage #brain activity #sleep cycle #non-REM sleep

🧠💤⬇️

#SWS #deep sleep #delta waves #brain activity #sleep stage #non-REM N3 #slow brain waves #sleep depth

😴👁️↔️

#rem sleep #rapid eye movement #sleep cycle #dreaming #sleep stage

👀↔️😴

#rem sleep #rapid eye movement #eye movement #sleep stage #paradoxical sleep

💤👀➡️⬅️

#rem sleep #eye movement sleep #sleep stage