I Lost It in the Lights: The Effects of Predictable and Variable Intermittent Vision on Unimanual Catching |
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Authors: | Lyons J. Fontaine R. Elliot Digby |
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Affiliation: | School of Kinesiology, Simon Fraser University, Burnaby, British Columbia, V5A IS6, Canada. jlyons@sfu.ca |
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Abstract: | In this study, 2 competing views of interceptive action were examined by assessing the influence of variability in the interval between visual samples in a unimanual ball-catching task. Subjects were required to catch tennis balls projected over a distance of 14 m, under conditions of intermittent vision in which the between-sample intervals were either predictable or unpredictable. Results indicated that, although performance was best with shorter between-sample intervals, the temporal predictability of samples did not reliably affect catching performance. This suggests that between-sample retinal expansion provides sufficient information for the timing of the interceptive act. |
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