It is yes. I get lost in what I'm doing, lose all track of time and my surroundings. I've forgotten to eat for entire days, not slept, had people talking to me and I've not even been aware they were in the room.

It can happen for anything, most often though it's things I derive great enjoyment from. For example, I've been working on a coding project this last few weeks, and in that time I've pulled a few all nighters because I just didn't realise how much time had passed and nobody pulled me out of it. It does leave me feeling awful though if I go that long because I'm physically drained and usually starving.