Maybe, like a tightrope walker, humans have an innate gyroscopic stabilizing sense and that enters into the stability of bike riding.
Pretty much. Our
vestibular system has a series of looped canals in our inner ears that provide us with the sense of three dimensional movement, including acceleration.
It is, however, tightly linked with our vision system and can be deceived when our eyes don't have a clear view ahead. The Kobe Bryant accident is believed to be due to this spatial disorientation (which I have also experienced).
