Evaluation of statokinesigram using 3-D plotting and discriminant function.

The 3-D plot of the statokinesigram, together with X-Y histograms and discriminant function studies are proposed towards a better understanding of the righting reflexes which maintain the erect stable posture in humans. Ninety samples taken from 30 healthy persons were analysed using on-line digital processing system. 3-D plot is an expression of the distribution map of the cumulative frequency of the sway of the center of gravity and helps intuitive recognition of the patterns of the righting reflexes. Parameters representing the distribution map are developed showing as good discriminant ratios as in the analyses of the locus and the area of the statokinesigram.