Unpaired Test for the Comparison of Frequency Response Functions Groups

The frequency response function (FRF) is a typical way to describe the outcome of experiments where posture control is perturbed with an external stimulus. The FRF is an empirical transfer function between an input stimulus and the induced body segment sway profile, represented as a vector of complex values associated with a vector of frequencies. This work proposes an unpaired test based on bootstrap to compare the averages the outcome of posture control experiments.