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Illusory visual motion stimulus elicits postural sway in migraine patients

Shu Imaizumi1, Motoyasu Honma2, Haruo Hibino3

  • 1Graduate School of Engineering, Chiba University Chiba, Japan ; Japan Society for the Promotion of Science Tokyo, Japan.

Frontiers in Psychology
|May 15, 2015
PubMed

Insights

Illusory visual motion affects balance control, particularly in migraine patients. Migraineurs showed increased postural sway immediately after viewing illusory motion, but decreased sway after a 30-second delay.

Area of Science:

  • Neuroscience
  • Vestibular System
  • Vision Science

Background:

  • Postural control is influenced by visual motion perception.
  • The effect of illusory visual motion on postural sway, especially in migraine patients, remains unclear.

Purpose of the Study:

  • To investigate the impact of illusory visual motion on postural sway in migraine patients compared to controls.
  • To determine if illusory motion elicits measurable postural sway.

Main Methods:

  • Participants (migraine patients and controls) underwent postural sway measurements.
  • Postural sway was assessed with eyes closed immediately after, or 30 seconds after, viewing static visual stimuli with and without illusory motion.

Main Results:

  • Migraine patients exhibited greater postural sway than controls immediately after viewing illusory motion (Experiment 1).
  • Migraine patients showed less postural sway than controls 30 seconds after viewing illusory motion (Experiment 2).

Conclusions:

  • Static visual stimuli inducing illusory motion can provoke postural sway in migraine patients.
  • This effect of illusory motion on postural sway may persist for at least 30 seconds in individuals with migraine.
Keywords:
migrainemultisensory integrationoptical illusionpostural controlvisionvisuo-vestibular interaction

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