Presentation	2002/8/22 Asymmetry for perception of motion toward and away from the observer Nobu SHIRAI, Masami K. Yamaguchi,
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Abstract(in English)	We examined the asymmetric responses between the detection of motion toward and away from the observer with expanding/contracting shaded circles. Our experiment followed visual search paradigm. In our experiment, targets and distractors were defined by expanding (or contracting) convex/concave circles. Expanding or contracting convex circles can be perceived as spheres moving in depth. However, Expanding or contracting concave circles cannot be perceived as objects moving in depth. Results suggested that the human visual system is more sensitive to expanding convex circles (which create the impression of approaching objects) than others.
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Keyword(in English)	Expansion/contraction / Shading cue / Perception of motion in depth
Paper #	HCS2002-19
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Committee	HCS
Conference Date	2002/8/22(1days)
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Paper Information
Registration To	Human Communication Science (HCS)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Asymmetry for perception of motion toward and away from the observer
Sub Title (in English)
Keyword(1)	Expansion/contraction
Keyword(2)	Shading cue
Keyword(3)	Perception of motion in depth
1st Author's Name	Nobu SHIRAI
1st Author's Affiliation	Department of Psychology, Graduate school of Literature, Chuo University()
2nd Author's Name	Masami K. Yamaguchi
2nd Author's Affiliation	Department of Psychology, Faculty of Literature, Chuo University
Date	2002/8/22
Paper #	HCS2002-19
Volume (vol)	vol.102
Number (no)	280
Page	pp.pp.-
#Pages	5
Date of Issue