Fig. 2

Mean and standard deviations of the RMS (left) and NPL (right) responses in the vertical plane for the + VVM (black line) and − VVM (grey line) participants across the period of the trial during the two visual motion scenes (SPACE and STREET). An asterisk (*) indicates a statistically significant difference between groups (see Table 3 for values). Root mean square (RMS); Normalized path length (NPL); Vertical (VERT); Positive visual-vestibular mismatch (+ VVM); Negative visual-vestibular mismatch (−VVM)