Induced self-motion in central vision.

G J Andersen; M L Braunstein

doi:10.1037//0096-1523.11.2.122

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Induced self-motion in central vision.

G J Andersen·M L Braunstein

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Abstract

Previous research on visually induced self-motion found that stimulation of the central visual field (up to 30 degrees in diameter) results in perceived object motion while self-motion requires peripheral stimulation. In the present study, perceived self-motion was induced with a radially expanding pattern simulating observer motion through a space filled with dots, with visual angles of 7.5 degrees, 10.6 degrees, 15 degrees, and 21.2 degrees. Speed and texture density were also varied. The duration of reported self-motion (a) decreased with increased speed, (b) failed to increase with increased visual angle, and (c) decreased with visual angle at the highest speed level. In a second experiment, subjects rated the perceived depth of the displays. The speed and speed/area interaction effects on judged depth matched those found for induced self-motion. These results suggest an extension of the focal/ambient theory: In addition to a more primitive ambient processing mode that requires peripheral vision, there is a higher level system concerned with ambient processing that functions in the central visual field and uses more complex stimulus information, such as internal depth represented in a radially expanding pattern.

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Depth Perception Humans Motion Perception Motion Sickness Optical Illusions Time Factors Visual Fields Journal Article Research Support, U.S. Gov't, P.H.S.

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G J Andersen, M L Braunstein. 1985. Induced self-motion in central vision.. https://doi.org/10.1037/%2F0096-1523.11.2.122

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