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Robust size illusion produced by expanding and contracting flow fields
Dong, Xue1,2; Bai, Jianying1; Bao, Min1
First AuthorDong, Xue
2017-04-01
Source PublicationVISION RESEARCH
Correspondent Emailbaom@psych.ac.cn
ISSN0042-6989
SubtypeArticle
Volume133Issue:0Pages:87-94
Abstract

A new illusion is described. Randomly positioned dots moved radially within an imaginary annular window. The dots' motion periodically changed the direction, leading to an alternating percept of expanding and contracting motion. Strikingly, the apparent size of the enclosed circular region shrank during the dots' expanding phases and dilated during the contracting phases. We quantitatively measured the illusion, and found that the presence of energy at the local kinetic edge could not account for the illusion. Besides, we reproduced the illusion on a natural scene background seen from a first-person point of view that moved forward and backward periodically. Blurring the boundaries of motion areas could not reverse the illusion in all subjects. Taken together, our observed illusion is likely induced by optic flow processing with some components of motion contrast. Expanding or contracting dots may induce the self-motion perception of either approaching or leaving way from the circle. These will make the circle appear smaller or larger since its retinal size remains constant. (C) 2017 Elsevier Ltd. All rights reserved.

KeywordSize illusion Motion Optic flow Size constancy Depth perception
DOI10.1016/j.visres.2017.01.003
Indexed BySCI ; SSCI
Language英语
Funding OrganizationKey Research Program of Chinese Academy of Sciences(KSZD-EW-TZ-003) ; National Natural Science Foundation of China(31371030)
WOS Research AreaNeurosciences & Neurology ; Ophthalmology
WOS SubjectNeurosciences ; Ophthalmology
WOS IDWOS:000399865500009
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS KeywordHUMAN VISUAL-CORTEX ; OPTIC FLOW ; INDUCED MOTION ; SELF-MOTION ; PERCEPTION ; AREA
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Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/21648
Collection中国科学院行为科学重点实验室
Corresponding AuthorBao, Min
Affiliation1.Inst Psychol, CAS Key Lab Behav Sci, 16 Lincui Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Dept Psychol, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Dong, Xue,Bai, Jianying,Bao, Min. Robust size illusion produced by expanding and contracting flow fields[J]. VISION RESEARCH,2017,133(0):87-94.
APA Dong, Xue,Bai, Jianying,&Bao, Min.(2017).Robust size illusion produced by expanding and contracting flow fields.VISION RESEARCH,133(0),87-94.
MLA Dong, Xue,et al."Robust size illusion produced by expanding and contracting flow fields".VISION RESEARCH 133.0(2017):87-94.
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