Fig. 3. Time-lagged cross correlation between change in orientation and change in bearing. Data shown are from paths in Fig. 2A (open circles), Fig. 2B (filled circles), the Fisher z-transformed mean of seven paths (filled triangles) and the 95% confidence interval (broken lines). Correlation coefficient is plotted on the y-axis, lag on the x-axis; a negative lag means change in bearing preceded a change in orientation.