Question: First off, my question is what exactly is the mental difference between sleep and the state of being unconscious, usually due to either trauma or blood loss?
Also, on a related note, it has apparently been tested on lab animals that total sleep deprivation over a period of time causes death in lab animals. Similarly, people with Fatal familial insomnia eventually spiral into complete insomnia and inevitably die. What is it about the complete lack of sleep that causes the person or lab animal to die?