Moving around objects and recognizing them

Perceptual and Motor Skills
F GiusbertiF Pavani

Abstract

This research concerned the use of mental rotation in recognizing rotated objects. Instead of the classic Shepard's paradigm in which subjects were still while observing rotated objects, here subjects had to move (or imagine moving) around stationary three-dimensional objects put in the middle of the trajectory. Thus, depending on the viewing positions, such objects were seen under six different perspectives (from 30 degrees to 180 degrees). The latter task has been thought to be closer to everyday life in which we obtain information regarding objects from their spatial properties. The results do not follow the classic rules of mental rotation of an object predicting a linear increase of the time needed to recognize distorted objects as a function of their angular displacement. They also differ from data in the literature about spatial imagery showing that access to spatial information is facilitated more when people actually move through a path than when they imagine moving. A probable explanation of this difference from the literature is discussed in relation to the particular involvement of the body in the experimental task.

References

Mar 5, 1976·Science·R N Shepard, S A Judd
Sep 1, 1992·Memory & Cognition·N FranklinV Coon
Apr 1, 1989·Cognitive Psychology·I RockL Tudor

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Citations

Apr 24, 1999·Perceptual and Motor Skills·A D KalamasB Rypma

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