Nonlinear analysis of the effects of vision and postural threat on upright stance.

Summary: Have you ever felt wobbly when standing up high or when you close your eyes? Scientists wanted to know exactly how our bodies balance when we are scared of falling or can't see. They used a new, advanced math tool to study how 20 young adults stood still on the ground and up high, both with their eyes open and closed. They found that when people are up high with their eyes closed, their bodies make more random, tiny movements to stay balanced. This new math tool helps doctors understand human balance much better than older methods!