Fig. 5.

Behavioural experiment. The points of subjective equality for judging whether the Gabors moved faster than a reference element are plotted for each experimental condition and each of the four participants. Values indicate the ratio between the test and reference speeds (in logarithmic units). Thus, positive numbers indicate that participants saw the test interval as moving slower than the reference interval. Different symbols denote the data from individual participants. All data here are pooled across the two possible locations of the curve quadrant (lower-right and upper-left). Psychometric curves for individual observers and global context locations are shown in Fig. S2.