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Monocular Optical Constraints on Collision Control
Journal of Experimental Psychology: Human Perception and Performance
  • Matthew R. H. Smith
  • John M. Flach, Wright State University - Main Campus
  • Scott M. Dittman
  • Terry Stanard
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A simulated ball-hitting task was used to explore the optical basis for collision control. Ball speed and size were manipulated in Experiments 1 and 2. Results showed a tendency for participants to respond earlier to slower and larger balls. Early in practice, participants would consistently miss the slowest and largest balls. Experiments 3 and 4 examined performance as a function of the range of speeds. Performance for identical speeds differed depending on whether the speeds were fastest or slowest within a range. Asymmetric transfer between the 2 ranges of speeds showed that those trained with slow speeds were very successful when tested with a faster range of speeds. Those trained with fast speeds did not do as well when tested on slower speeds. The pattern of results across 4 experiments suggests that participants were using optical angle and expansion rate as separate degrees of freedom for solving the collision task.
Citation Information
Matthew R. H. Smith, John M. Flach, Scott M. Dittman and Terry Stanard. "Monocular Optical Constraints on Collision Control" Journal of Experimental Psychology: Human Perception and Performance Vol. 27 Iss. 2 (2001) p. 395 - 410 ISSN: 00961523
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