Whenever my nerdy/schizoid/introverted side is stronger, I feel exactly this, I am behind the eyes and staring forward, as in this state my spatial location ability, the ability to be aware in 360 degrees, is bad. But whenever this side of me retreats a bit (for example any sense of success or victory beats down the inner nerd for a while) and I come out from my inner shell to bask in the world, I feel at home in space, I get 360 degrees awareness, I know where my legs and hands are and so on, then I am less aware of where I am and more in the center of the body, perhaps chest level.

Not everyone is that visually focused.

I'd say I'm more focused on auditory and kinesthetic senses. I'm focused in my head, but more between the ears than behind the eyes.

Even moreso than visual, we are mental creatures. Ideas and culture can make all the difference.

To the OP: there are times and circumstances by which I can lose much connection to the location of my body at all. Usually associated with stargazing.

I also recall that the perceived location of self (soul, mind) has changed historically. Without doubt Aristotele placed it in the heart but otherwise refs are hard to find. I vaguely recall reading about it in Precht.