Smooth enlargement of human standing sway by instability due to weak reaction floor and noise.

摘要: Human quiet standing is accompanied by body sway. The amplitude of this sway known to be larger than would predicted from simple noise effects, and characteristics are changed neurological disorders. This large thought arise nonlinear control with prolonged periods no (intermittent control), a system kind has been exhibit bifurcation. presence stability-dependent transition enables dynamic reaction that depends on the stability environment, can explain change in accompanies some research analyses model induces transition, discusses whether human reflects such mechanism. In mathematical analysis models, control-like) integral shown Hopf Moreover, analytical solution noise, work smooth enlargement around bifurcation point. compared measured floors different stabilities. By quantitatively comparing parameters between observation prediction, appear as analysis.