I was going to open this topic up with some sort of research on it, but my attention span cannot find the patience to look for it. So I will just open with my own experience, and should I find some links down the road that speak to the subject, I will surely add them.
For about a year or more, I have become crazy aware that when there are no extremes happening in my life- stress, obsession, family drama, or extreme forms of entertainment/travel, I basically feel nothing at all. Or as I like to say: I go blank.
It's like nothing is there, and I'm just some mechanical thing on auto pilot, with nothing to connect me to the world around me. It's something that I feel very comfortable with in my older age, and I see no cause for concern, but it bothers other people. Causes uncertainty to arise in those close to me- feelings of fear that disinterest is inevitable, and therefore nothing to keep me coming around.
I'd like to think that I'm grown up enough now, not to have to go out seeking extremes in order to juice me back from animated corpse- That despite the fact that when such blankness occurs, it can lead to a kind of boredom that often triggers high levels of adrenaline and urgency to find something intense to fill up with; I can easily just float in that blankness, until I hit a wall.
But can I ask those people in my intimate life to expect nothing from me during such times? Or should I keep trying to find ways to get high enough to feel something? Can you feel close to someone who goes blank when nothing extreme is happening?