文章基本信息

标题：The Effect of Optical Flow Motion Direction on Vection Strength
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作者：Yoshitaka Fujii ; Takeharu Seno
期刊名称：i-Perception
电子版ISSN：2041-6695
出版年度：2020
卷号：11
期号：1
页码：1-13
DOI：10.1177/2041669519899108
语种：English
出版社：Pion Ltd.
摘要：In some phenomena of visual perception, the motion direction of visual stimuli can affect perception. In particular, asymmetries between oblique directions and cardinal (horizontal and vertical) directions have been reported and are known as oblique effects (e.g., contrast sensitivity and motion threshold). In this study, we investigated how vection strength depends on motion direction. Participants observed random-dot optical flow in a circular field and rated the perceived vection strength. Dot movement was systematically controlled using the following angles: 0° (up), 30°, 45°, 60°, 90°, 120°, 135°, 150°, and 180° (down). We found that vection strength depended on motion direction and was weaker in the oblique directions than cardinal directions. Thus, the effect of motion direction on vection strength was variable, as seen in the shape of the oblique effect.
关键词：vection;direction effect;oblique effect;asymmetry;motion perception