Studies in space orientation: I. Perception of the upright with displaced visual fields.

By requiring the S to look into a tilted mirror scene while his body remains erect, we have essentially a situation where the visual coordinates are displaced while the postural upright remains unchanged… . In an experiment with 49 Ss striking evidence was found of the primary importance of visual factors in perception of the upright, and of the secondary role of postural determinants. Though most Ss were greatly influenced by the tilted visual field in making their judgments, there were found significant individual differences in this regard. (PsycINFO Database Record (c) 2012 APA, all rights reserved)