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  Mimicry of 3D object rotations

van Veen, H., Kappers, A., Koenderink, J., & van Woerkom, N. (1996). Mimicry of 3D object rotations. Poster presented at 19th European Conference on Visual Perception (ECVP 1996), Strasbourg, France.

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van Veen, HAHC1, 2, Author              
Kappers, AML, Author
Koenderink, JJ, Author
van Woerkom, N, Author
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Although we are constantly confronted with rotary movement of objects in daily life, little is known about human perception of three-dimensional rotations. We recently introduced a new paradigm to investigate the processing of visual information about rotations in space in which subjects are asked to mimic the rotary movement of objects displayed on a computer monitor by simultaneously changing the orientation of a hand-held object. From the recorded motion of this real object (a ball) we can extract the average responded rotation axis for each trial. Here, we report further experiments based on this approach. When watching a rotating object with a marked extension in a certain direction, the orientation of this object with respect to the axis of rotation has a distinct effect on the appearance of the motion. We show that, for rod-like objects, the variability in the recorded orientation of the rotation axis is lowest when the stimulus rotation axis is either aligned with or orthogonal to the main axis of the object: the standard deviation of signed angular error in arbitrary directions is typically 5°. When rotation axis and object axis are not aligned, variability is much higher, reaching a maximum at 45° misalignment. The variability found with objects that have no marked elongation fell between those extremes. Our findings confirm that subjects' responses can be highly reproducible. We conclude that alignment of the principal axes of an object with the axis of rotation facilitates subjects' mimicry of object motion.

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 Dates: 1996-09
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: BibTex Citekey: 596
 Degree: -

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Title: 19th European Conference on Visual Perception (ECVP 1996)
Place of Event: Strasbourg, France
Start-/End Date: 1996-09-09 - 1996-09-13

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 25 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 58 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369