And we could take a very simple view and say, well, it is that which we lose when we fall into deep sleep without dreams, or when we go under anesthesia, and it is what we regain when we recover from sleep or from anesthesia.
Y a primera vista, podríamos decir que es aquello que perdemos al caer en un sueño profundo sin sueños, o bajo anestesia; Y es aquello que recobramos al despertarnos o tras los efectos de la anestesia.