Table 1 A complete list of the posturographic parameters for feature extraction

Time-domain distance measures

 Mean distance

M-L, A-P, radius

 Maximal distance

M-L, A-P, radius

 Root mean square distance

M-L, A-P, radius

 Range

M-L, A-P, radius

 Mean velocity

M-L, A-P, radius

Time-domain area measures

 95% confidence ellipse area

radius

Time-domain hybrid measure

 Sway area per second

radius

 Mean frequency

M-L, A-P, radius

 Fractal dimension

radius

Frequency domain measure

 Total power spectrum density

M-L, A-P

 50% power frequency

M-L, A-P

 95% power frequency

M-L, A-P

 Centroid frequency

M-L, A-P

 Frequency dispersion

M-L, A-P