Fig. 3

Mean values and standard deviations (twenty repetitions) of step lengths, widths, and step times for two steps prior to (P/R0 and NP/L0) and four consecutive steps following LL-NP/L perturbation commencement (P/R1, NP/L1, P/R2 and NP/L2). The left column shows data for experimental conditions BEFORE_60, AFTER_60 and CONTROL_60, while the right column shows data for experimental conditions AFTER_90 and CONTROL_90. Footprints illustrating unperturbed stepping and stepping following LL-NP/L perturbation with indication of step lengths (SL), step widths (SW) and step times (ST) is provided at the bottom for the experimental condition BEFORE_60