Effects of Motion, Implied Direction and Displacement of a Large-Visual-Stimulus on Postural Control |
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Authors: | Aki Tsuruhara Hirohiko Kaneko |
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Affiliation: | (1) Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, R2-60, 4259 Nagatsuta, Midori-ku Yokohama 226-8503, Japan |
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Abstract: | Effects of motion, implied direction in a static stimulus and displacement on postural control were examined independently. In Experiment 1, rotation of a random-dot stimulus was presented. In Experiments 2 and 3, photographic slides of natural scenes were used; participants closed their eyes during stimulus rotation to eliminate motion information. In Experiment 2, the stimulus was presented upright initially, then presented again with a tilt. In Experiment 3, the order was reversed to separate the effects of implied direction and displacement. Results showed that all information of motion, implied direction, and displacement had some effect on postural control, although visual information of motion has been presumed to have a principal effect on postural control. Results suggested that the effects of implied direction might reflect an immediate processing of information. The effects of displacement and motion might reflect a continuous processing of information. |
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Keywords: | postural control large-visual-stimulus tilt motion displacement vertical and horizontal information direction |
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