It had been assumed that the deep sleep of sleepwalkers would show an elevated fight-or-flight response that would predispose them to higher risks of experiencing sleepwalking episodes.
HealthEssentials: Sleep paralysis and sleep hallucinations are the results of disrupted sleep.
Psychologist Jade Wu, PhD, writes for Psychology Today about the biological mechanisms behind sleep paralysis.
Mark W. Mahowald, MD, who dedicated his career to sleep medicine—much of it as sleep center director at the Minnesota Regional Sleep Disorders Center, a part of Hennepin County Medical Center—died of pneumonia on March 18, with his family at his side.
Scientists aren't exactly sure why sleep talking occurs during stage 3 sleep, but it may relate to how “different areas of the brain communicate really well with each other” during this particular sleep stage, reports Mic.