Papers

Peer-reviewed
2008

Depth representation of moving 3-D objects in apparent-motion path

PERCEPTION
  • Souta Hidaka
  • ,
  • Yousuke Kawachi
  • ,
  • Jiro Gyoba

Volume
37
Number
5
First page
688
Last page
703
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1068/p5766
Publisher
PION LTD

Apparent motion is perceived when two objects are presented alternately at different positions. The internal representations of apparently moving objects are formed in an apparent-motion path which lacks physical inputs. We investigated the depth information contained in the representation of 3-D moving objects in an apparent-motion path. We examined how probe objects-briefly placed in the motion path-affected the perceived smoothness of apparent motion. The probe objects comprised 3-D objects which were defined by being shaded or by disparity (convex/concave) or 2-D (flat) objects, while the moving objects were convex/concave objects. We found that flat probe objects induced a significantly smoother motion perception than concave probe objects only in the case of the convex moving objects. However, convex probe objects did not lead to smoother motion as the flat objects did, although the convex probe objects contained the same depth information for the moving objects. Moreover, the difference between probe objects was reduced when the moving objects were concave. These counterintuitive results were consistent in conditions when both depth cues were used. The results suggest that internal representations contain incomplete depth information that is intermediate between that of 2-D and 3-D objects.

Link information
DOI
https://doi.org/10.1068/p5766
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/18605143
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000257218700005&DestApp=WOS_CPL
ID information
  • DOI : 10.1068/p5766
  • ISSN : 0301-0066
  • Pubmed ID : 18605143
  • Web of Science ID : WOS:000257218700005

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