title: Illusory visual motion stimulus elicits postural sway in migraine patients.
abstract: Although the perception of visual motion modulates postural control, it is unknown whether illusory visual motion elicits postural sway. The present study examined the effect of illusory motion on postural sway in patients with migraine, who tend to be sensitive to it. We measured postural sway for both migraine patients and controls while they viewed static visual stimuli with and without illusory motion. The participants' postural sway was measured when they closed their eyes either immediately after (Experiment 1), or 30 s after (Experiment 2), viewing the stimuli. The patients swayed more than the controls when they closed their eyes immediately after viewing the illusory motion (Experiment 1), and they swayed less than the controls when they closed their eyes 30 s after viewing it (Experiment 2). These results suggest that static visual stimuli with illusory motion can induce postural sway that may last for at least 30 s in patients with migraine.
authors.affiliation: Graduate School of Engineering, Chiba University Chiba, Japan ; Japan Society for the Promotion of Science Tokyo, Japan.
authors.forename: Shu
authors.initials: S
authors.lastname: Imaizumi
authors.affiliation: School of Medicine, Showa University Tokyo, Japan.
authors.forename: Motoyasu
authors.initials: M
authors.lastname: Honma
authors.affiliation: Graduate School of Engineering, Chiba University Chiba, Japan.
authors.forename: Haruo
authors.initials: H
authors.lastname: Hibino
authors.affiliation: Graduate School of Engineering, Chiba University Chiba, Japan ; School of Medicine, Showa University Tokyo, Japan ; School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore Singapore.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Koyama
keywords: migraine; multisensory integration; optical illusion; postural control; vision; visuo-vestibular interaction