State reversals of optically induced tilt and torsional eye movements |
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Authors: | Ronald A Finke Richard Held |
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Institution: | 1. Department of Psychology, E10-114A, Massachusetts Institute of Technology, 79 Amherst Street, 02139, Cambridge, Massachusetts
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Abstract: | Alternations of the state of apparent self-motion during observation of a large visual display rotating about the line of sight are associated with alternations in the magnitude of induced tilt and torsional eye rotation. In one experiment, shifts in visually induced tilt during these state alternations are found to be in the opposite direction to corresponding shifts in induced ocular torsion. In a second experiment, the reversals of self-motion perception are shown to be an intravisual phenomenon, independent of competing inputs provided by the vestibular system. These results emphasize the importance of distinguishing between visual and vestibular processes in tilt perception and ocular rotation during human orientation to gravitational vertical. |
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