Abstract
To understand the visual analysis of biological motion, subjects viewed dynamic, stick figure renditions of a walker, car, or scissors through apertures. As a result of the aperture problem, the motion of each visible edge was ambiguous. Subjects readily identified the human figure but were unable to identify the car or scissors through invisible apertures. Recognition was orientation specific and robust across a range of stimulus durations, and it benefited from limb orientation cues. The results support the theory that the visual system performs spatially global analyses to interpret biological motion displays.
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Shiffrar, M., Lichtey, L. & Chatterjee, S.H. The perception of biological motion across apertures. Perception & Psychophysics 59, 51–59 (1997). https://doi.org/10.3758/BF03206847
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DOI: https://doi.org/10.3758/BF03206847