Numenta Research Meeting - Dec 9, 2019

Start here:

You have the entire body doing inverse kinematic transform to support the gyroscope stabilization of you visual system. All the way to your supporting surface. Add to that your head and eye pointing system and you have a very good directional system.
Let me go a step further - this same system is your map back to the frame of reference “out there” and your interface between all this and your “end effectors” makes your “personal space” special as it is where your sense of agency has the greatest influence.
This whole thing is mixed in with your posture control system. If you think about it - it is really the same system.

This IS an insanely complicated system and goes directly to the point that the primary function of the brain is to run the body.
This also goes a long way towards explaining this: