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Comparison of response amplitudes for rivalry and stimulus alternation, for reported percepts of phantom (positive points) and no-phantom (negative points). Amplitudes reflect the peak-to-trough difference in fMRI response (time window 0–7 s) for each subject, visual area and condition. All data points fall closely to line of unity (line of best fit: slope 0.98, intercept 0.002), indicating equivalent response amplitudes for rivalry and stimulus alternation.
