Tag: REM

A Little-Understood Sleep Disorder Affects Millions and Has Clear Links to Dementia

A little-known and poorly understood sleep disorder that occurs during the rapid eye movement, or REM, stage of sleep has garnered attention for its role in foreshadowing neurodegenerative brain diseases such as Parkinson’s disease and Lewy body dementia. The disorder, known as REM sleep behavior disorder, or RBD in the medical field, affects around 1 percent…


Being Chased, Losing Your Teeth or Falling Down? What Science Says About Recurring Dreams

Having the same dream again and again is a well-known phenomenon—nearly two-thirds of the population report having recurring dreams. Being chased, finding yourself in the middle of a natural disaster, losing your teeth, or forgetting to go to class for an entire semester are typical recurring scenarios in these dreams. But where does the phenomenon…