Central visual learning and illusory visual direction after backward head tilts |
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Authors: | Linda A. Fogelgren Wayne L. Shebilske |
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Affiliation: | 1. University of Virginia, 22901, Charlottesville, Virginia
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Abstract: | When the head is returned to upright after prolonged backward tilt, people who are asked to look straight ahead look higher than they did before the backward tilting. This has been interpreted in terms of hypotheses about central visual learning or by hypotheses about peripheral muscle physiology. According to the learning hypotheses, the illusion of visual direction that occurs after head tilts depends upon the presence of discordant cues about direction. In the present study, the illusion was the same with or without discordant information. |
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