FIGURE 4.

Average subject responses. (A) For the three experiments, the mean orientation of the subjects’ responses to each target orientation is represented for the Seated and Supine conditions. The three parameters representing (B) the response accuracy, (C) Aubert-Müller effects, that is the global bias of the responses due to lateral neck flexion. Positive values correspond to deviations toward the head direction. (D) Response distortions are reported for the Seated and Supine conditions of the three experiments. Vertical whiskers correspond to 95% confidence intervals. * and ^** represent p < 0.05/3 and p < 0.01/3, respectively, and their color represents the experiment to which they refer.