I've noticed that when I get between 2-3 hours of sleep as compared to five or more, almost all of my symptoms are dulled. It becomes easier to function, and I actually feel like I make progress and emotional connection during conversations. The only bad thing is being in a semi-fog like state.
My mind stops racing and I feel no anxiety whatsoever. I can stare into peoples eyes as long as I want without feeling a crazy nervous feeling to look away. Also, I normally have a hard time blocking out other stimuli and staying in the moment of a conversation, especially when noise is occurring around me. When I get less sleep, it's easy to focus in on what someone is saying and I feel much more comfortable.
I don't get paranoid (skeptical may be a better word) or racing thoughts while someone is talking and I become a better listener, and I feel like I actually have the time to think up a good response in order to continue a conversation. Also I don't feel hurried to say something.
I even find myself saying hello to random people more often when I run off only a couple hours of sleep.
Also, I'm too sleepy to really care if I say/do something dumb and I can usually laugh it off or ignore it without anyone really taking notice.
Overall, I don't feel forced to talk or say something witty, and find myself going with the flow of conversation more.
I realize it may not be the healthiest option, but I find this strangely effective. Maybe it's because the lack of sleep dulls down parts of my brain that are overactive, but I can't be sure of anything. All I know is besides being sleepy, I kind of like myself more this way..as weird as it sounds.