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Effect of the type of carrier on the illusory MIPS for a range of carrier velocities. Data are shown for two observers for truncated-Gabor stimuli of 1 and 4 cpd and random-texture stimuli, and eccentricities of 1 and 4°. The duration of the stimulus was 453 ms. Data for 4 cpd truncated-Gabor stimuli are re-plotted from those in Figure 2. The error bars represent ±1 SEM across runs.
