Walker Page
If you mean the physical device, there is a significant body of research on why are banned in some countries like Canada.
Sleep Loss Activates Emotional Networks and Disconnects the Prefrontal Cortex (Current Biology, 2007). Walker
This study used MRI scans to show that without sleep, the brain's emotional center (the amygdala) overreacts by 60% , while the "rational" part of the brain essentially goes offline. Source: Matthew P. Walker's Research Profile 3. The Controversy of Baby Walkers (Pediatrics) If you mean the physical device, there is