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Angle illusion in a straight road.
Perception. 2011; 40(11):1350-6.P

Abstract

We report a new angle illusion observed when viewing a real scene involving a straight road. The scene portrays two white lines which outline a traffic lane on a road and converge to a vanishing point. In experiment 1, observers estimated the angle created by these converging lines in this scene or in its image projected onto a screen. Results showed strong underestimation of the angle, ie over 50% for observations of both the real scene and its projected image. Experiment 2 assessed how depth cues in projected images influence the angle illusion. Results showed that this angle illusion disappeared when scene information surrounding convergent lines was removed. In addition, the illusion was attenuated with projection of an inverted scene image. These findings are interpreted in terms of a misadoption of depth information in the processing of angle perception in a flat image; in turn, this induces a massive angle illusion.

Authors+Show Affiliations

Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube-shi, Yamaguchi 755-8611, Japan. osaa@yamaguchi-u.ac.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22416592

Citation

Osa, Atsushi, et al. "Angle Illusion in a Straight Road." Perception, vol. 40, no. 11, 2011, pp. 1350-6.
Osa A, Nagata K, Honda Y, et al. Angle illusion in a straight road. Perception. 2011;40(11):1350-6.
Osa, A., Nagata, K., Honda, Y., Ichikawa, M., Matsuda, K., & Miike, H. (2011). Angle illusion in a straight road. Perception, 40(11), 1350-6.
Osa A, et al. Angle Illusion in a Straight Road. Perception. 2011;40(11):1350-6. PubMed PMID: 22416592.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Angle illusion in a straight road. AU - Osa,Atsushi, AU - Nagata,Kazumi, AU - Honda,Yousuke, AU - Ichikawa,Makoto, AU - Matsuda,Ken, AU - Miike,Hidetoshi, PY - 2012/3/16/entrez PY - 2011/1/1/pubmed PY - 2012/4/4/medline SP - 1350 EP - 6 JF - Perception JO - Perception VL - 40 IS - 11 N2 - We report a new angle illusion observed when viewing a real scene involving a straight road. The scene portrays two white lines which outline a traffic lane on a road and converge to a vanishing point. In experiment 1, observers estimated the angle created by these converging lines in this scene or in its image projected onto a screen. Results showed strong underestimation of the angle, ie over 50% for observations of both the real scene and its projected image. Experiment 2 assessed how depth cues in projected images influence the angle illusion. Results showed that this angle illusion disappeared when scene information surrounding convergent lines was removed. In addition, the illusion was attenuated with projection of an inverted scene image. These findings are interpreted in terms of a misadoption of depth information in the processing of angle perception in a flat image; in turn, this induces a massive angle illusion. SN - 0301-0066 UR - https://www.unboundmedicine.com/medline/citation/22416592/Angle_illusion_in_a_straight_road_ L2 - http://journals.sagepub.com/doi/full/10.1068/p7068?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -