Speed discrimination thresholds for translational motion (A) and rotational motion (B).

Speed discrimination thresholds as Weber fractions plotted as a function of the number of elements visible in the stimulus. Circles depict data for conditions in which the actual number of elements in the stimulus was changed; diamonds - removed elements were replaced by a dynamic Mondrian patch; and circles elements are present but suppressed from awareness using CFS. Error bars represent 95% confidence intervals.