group
open eyes sway area1
open eyes COP length1
open eyes sway velocity1
open eyes COP AP1
open eyes COP ML1
open eyes sway area2
open eyes COP length2
open eyes sway velocity2
open eyes COP AP2
open eyes COP ML2
close eyes sway area1
close eyes COP length1
close eyes sway velocity1
close eyes COP AP1
colse eyes COP ML1
close eyes sway area2
close eyes COP length2
close eyes sway velocity2
close eyes COP AP2