Broken escalator phenomenon
The broken escalator phenomenon is the sensation of losing balance, confusion or dizziness reported by some people when stepping onto an escalator which is not working. It is said that there is a brief, odd sensation of imbalance, despite full awareness that the escalator is not going to move.
The foot of an escalator
Proprioception is the sense of self-movement, force, and body position.
Schematics and images of limb proprioceptors in mammals (top) and insects (bottom)[clarification needed]