Abstract
The role of an artificial pupil in perception studies using backlighted stimuli is neither obvious nor has it been thoroughly explored. This study finds an effect which increases the signal/noise ratio of the stimulus. The artificial pupil increases the signal/noise ratio by increasing depth of field, increasing figure/ground contrast, and sharpening figure contours. The use of an artificial pupil is recommended in visual perception experiments.
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Schurman, D.L. Effects of an artificial pupil in visual perception. Psychon Sci 11, 57 (1968). https://doi.org/10.3758/BF03330990
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DOI: https://doi.org/10.3758/BF03330990