Comment by toss1

Very interesting, and I suspect somewhat related to the phenomenon in high-performance sports and music where the player or athlete feels they have become one with the instrument or equipment. It happens after a certain level of expertise, and when everything is tuned just right, and often with the flow state.

The perception goes beyond feeling fine sensations in the interface to the instrument/equipment, but literally feeling like it is a part of your body. I've gotten it in both alpine ski racing and sportscar racing. When it is ON, moving a ski or wheel to a particular spot feels the same as when I'd put my foot on a particular rock where running in rough terrain, and often even more part of me than when kicking a soccer ball with my real foot. Both the sensitivity of the feel (feedback) and the precision with which I could execute was just an entire other level, and it is still weird to think of how it was often better feedback & precision than my own foot in a less-skilled situation.