Geometrical illusions can affect time-to-contact estimation and mimed prehension |
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Authors: | DeLucia P R Tresilian J R Meyer L E |
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Institution: | Department of Psychology, Texas Tech University, Lubbock 79409-2051, USA. djxpd@ttacs.ttu.edu |
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Abstract: | Results indicate that under some conditions the Sander parallelogram illusion can affect time-to-contact (TTC) estimation in a prediction-motion (PM) task and in an interceptive action (IA). The illusion also affected mimed manual prehension. The implication is that the timing of responses in the PM and IA tasks may involve an estimate of TTC that is based on the perceived dimensions of the environment. Further research is warranted in the development of models of perceived collision and of visually guided actions. |
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