Scientists Just Changed the Rules of What You Can Do While You Sleep

Quoted: Benjamin Baird, a sleep researcher at the University of Wisconsin–Madison who wasn’t involved in this study, told Scientific American the findings “challenge our ideas about what sleep is.” SciAm has more: Sleep has classically been defined as unresponsiveness to external environmental stimuli—and that feature is still typically part of the definition today, Baird explains. “This work pushes us to think carefully—rethink, maybe—about some of those fundamental definitions about the nature of sleep itself, and what’s possible in sleep.”