A QUANTITATIVE EVALUATION OF STRIPE AND GRID PATTERNS BY MIGRAINE PATIENTS AND NORMAL CONTROLS

概要

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Geometrical patterns such as stripes and grids induce various types of visual perception including movement, fatigue, and discomfort. Although these patterns can induce discomfort, especially in migraine patients, they can also be used for art and design to induce good feelings. In the present study, we attempted to measure these perceptions quantitatively and systematically in migraineurs and headache-free controls. In the experiment, participants evaluated discomfort, brightness, fatigue, flicker, motion, and the beauty of square and sine wave patterns by using magnitude estimation. The results showed that all of the evaluation values, except for beauty, increased in both groups as the grids became smaller; moreover, brightness increased significantly by a greater amount in migraineurs than in controls. The square waves with the smallest grids induced both beauty and discomfort in both groups, and the sine-wave patterns induced stronger fatigue and motion perceptions than square-waves patterns in both groups.
2011-09-30