異なった種類の運動情報からの自己運動知覚(人工現実感)(マルチメディア・仮想環境基礎)

概要

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Motion information is often divided into two classes. One is first-order motion that is processed with spatio-temporal filtering. The other is second-order motion that is processed at higher-levels. In this study, we used compound waves of 2f+3f (2+3f wave) with displacements of a half cycle of 2f where first- and second-order motion information exist at the same time and their directions are opposite. We examined the contribution of second-order motion to self-motion perception, named vection while varying the contrast of this wave. As a result, vection was well related to motion perceotion. With higher contrasts, the direction of perceived motion was in the direction of patterns shift. This indicates that second-order system is dominant for the motion perception in this condition. In this condition, vection was reported in the direction defined by second-order motion. With lower contrasts, on the other hand, first-order motion was dominant and vection was induced in the direction defined by first-order motion. Furthermore, first-order motion induced vection more effectively than second-order motion.
社団法人電子情報通信学会の論文
2003-06-03