VR	Virtual reality
HMD	Head-mounted display
SP	Static posturography
COP	Center of pressure
CDP	Computerized dynamic posturography
SOT	Sensory organization test
LOS	Limits of stability
A-P	Anteroposterior displacement in force-plate posturography
M-L	Mediolateral displacement in force-plate posturography
BRU	Balance rehabilitation unit
BPPV	Benign positional paroxysmal vertigo
3D	Three-dimensional virtual environment
2D	Flat, two-dimensional virtual environment
DOF	Degrees of freedom