I just wanted to ask, because I felt like I was more creative when sleep deprived, but I suspect that wasn't the case. I guessed, I needed a reality check?
Maybe some people are like that, since I also saw various authors describing so in their notes. As for me, though, when I'm sleep deprived I can't think to write at all.
Yes and no.
Your thoughts become unhinged when you're truly sleep deprived. Go long enough and you'll hallucinate. Its not creative in the traditional sense but coming up with some truly batshit insane ideas is a possibility.
I won't say the weirdest things I've come up with on little/no sleep but I did start a vampires in space story after being awake for 26 hours so that can give you a rough idea.