This seems to be a well known phenomenon. There's a whole subreddit called 3am jokes (https://www.reddit.com/r/3amjokes/) for this.

edit: And as a sibling comment mentioned, we do know that cognition suffers immensely when sleep-deprived.

'Distinct' you mean?

If only there was a way to get the euphoria without the reduction in function, huh?

Other sleep-related studies show things like decreasing REM sleep helps as well. Some psychiatric drugs already have this effect on people, in fact. Obviously, going without sleep is going to do this. Granted, this is all speculation from the bits I've read, but it would make sense - as well as why some folks find weed to help greatly: taken regularly, it often decreases dreaming.

I'd provide the link, but I can't remember where I read it. I've seen a few articles reporting on this particular thing.

I'm not sure if you're joking or not, but I think it's pretty safe to say there are bigger things contributing to "ravers" euphoria than sleep deprivation. Like the music, alcohol. Or in many popular European clubs, the recreational drugs.

That's not to say I'm suggesting people need to on something to be having a good time, but your "raver" example is a pretty poor one if it's not meant as a joke.

Most people there weren't sober. But who cares what adults get up to as long as they respect one another. :)

You also cannot understate just how significant the effect music has on one's mood. I'd wager that alone would have a more significant affect than sleep deprivation alone. Plus exercise releases endorphins too

So I really don't think raving is a good example here since there's a multitude of other significant and well studied effects also at play.

What I've noticed is that without sleep, some of my abilities are stronger, but everything memory-related is much weaker. I notice everything extremely fast, think quickly and react much faster than normally. My focus is pretty crazy. But, I can't remember some things I know, and detailed memories of that day after a sleepless night are usually gone by the next day. I think it might be some sort of survival mode.

I mean lions literally because four-legged things with the big teeth were a driving force of our evolution for millions of years. Those instincts/traits are very much with us today.

Edit: what's the word for that state of mind, maybe frenzy?

Personal experience, caused an accident when I was 23 this way and learned an important lesson: don't drive without having rested.