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Updated: Jul 28, 2026

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
Published on: December 4, 2013
Eye position sense contributes to the judgement of slant
F M James1, S Whitehead, G K Humphrey
1CIHR Group on Action and Perception, University of Western Ontario, Department of Physiology, Medical Science Building, Ontario, N6A 5C1, London, Canada.
Abstract:
We measured monocular judgements of the slant of a cube face while varying eye position in the absence of stereoscopic and external lighting cues. Errors were found to be small, only 10% on average of the cube's eccentricity. Two factors appear to have contributed approximately equally to this error: an underestimate of cube slant as seen by the eye and an underestimate of eye position. When prism adaptation altered the sensed eye position, the pattern of slant judgements changed to reflect the altered sense of eye position.
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