title: A short line segment squirms along a zigzag line.
abstract: When a short straight line segment moves across a zigzag line and is viewed in one's peripheral vision, it appears to exhibit nonrigid squirming motion (the squirm effect). This phenomenon demonstrates that the form, orientation, and motion direction of a short line are influenced by those of a longer one when they are viewed in one's peripheral vision.
authors.affiliation: Faculty of Design, Kyushu University, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan, and Research Center for Applied Perceptual Science, Kyushu University, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan; e-mail: ito@design.kyushu-u.ac.jp.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ito
authors.forename: Xie
authors.initials: X
authors.lastname: Yang
keywords: assimilation; corner detection; line orientation; motion direction; motion illusion; motion streak