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Perceptual judgment results. (A) Sample psychometric curves from the first and fourth perceptual judgment blocks in the vertical reduction condition, which represent perceptual indexes 7.5 (first block) and 5.5 (fourth block), respectively. (B) Perceptual change in degrees for each perceptual judgment block relative to the initial block during each of the four experimental conditions. Error bars represent the standard error (SEM).
