Back when I dabbled in extreme sleep deprivation I'd be forced into a sort of wakeful sleep where what I can only describe as "eye movies" would forcibly take over my vision center. They were entirely fabricated, and indistinguishable from normal vision. My eyes would still be open, in some cases I'd still be engaged in a demanding activity like riding a motorcycle (this was insane), but my mind was completely out to lunch and I'd be observing a completely different world than the one reflected on my retinas.
My conventional sleep dreams never had that amount of consciously-accessible fidelity, but I presume some people can access their dreams as well as my sleep deprivation experiences proved for me.
Some people can't access their dreams at all, why wouldn't variety in the other direction occur as well? I think we should assume it's a spectrum across the whole gamut.
Back when I dabbled in extreme sleep deprivation I'd be forced into a sort of wakeful sleep where what I can only describe as "eye movies" would forcibly take over my vision center. They were entirely fabricated, and indistinguishable from normal vision. My eyes would still be open, in some cases I'd still be engaged in a demanding activity like riding a motorcycle (this was insane), but my mind was completely out to lunch and I'd be observing a completely different world than the one reflected on my retinas.
My conventional sleep dreams never had that amount of consciously-accessible fidelity, but I presume some people can access their dreams as well as my sleep deprivation experiences proved for me.
Some people can't access their dreams at all, why wouldn't variety in the other direction occur as well? I think we should assume it's a spectrum across the whole gamut.