三次元における図形効果に関する研究--図形の前方視空間における変位効果

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概要

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• Yokose, Kawamura, and Ichikawa have found that when a very small point was placed in the neighborhood of various kinds of figure, the point was influenced by the figure and was perceived to be displaced (or changed in location) in various directions.Whereas they demonstrated the displacement effect of figure on the same plane as the figure, I assume that such effect exists also in the surrounding visual space in front of the figure. To test this assumption experiments were performed with following procedures.1. Two kinds of figure, that is, a circular figure and an angular figure were used as stimulus objects.2. A small test point was presented at various positions in front of the figure as shown in Fig. 3, 8, and the amount of displacement (or the change of location) of the test point was measured by observing the apparent distance between the test point and the surface of the figure.Main findings were as follows:1. A circular figure (Exp. I, II)A point placed closely in front of the figure was displaced toward the figure. When it was placed farther away, the displacement increased to the maximum as shown in Fig. 4, 5, and as it was put still farther away, the displacement decreased gradually and reached to Zero. When put farthest away, it was displaced away from the figure.2. An angular figure (Exp. III)When a point was placed in front of the inside of an angle, the amount of displacement toward the figure was the largest near the corner of the angle (cf. Fig. 9, 10). When it was put in front of the outside of an angle, the displacement rapidly decreased to Zero as the actual distance between the surface of the figure and the point increased, as shown in Fig. 9, 11. Such relation between the actual distance and the amount of displacement was on the whole similar to that of the circular figure.From these results it was concluded that firstly, the displacement effect in the third dimension demonstrates the similar tendency to that in the frontal plane secondly, the results of an angular figure reveal the dependency of the displacement effect in the third dimension on the strength of the visual perception field in the frontal plane; thirdly, the marked difference of the effect in the third dimension from that of the frontal plane is the occurrence of the displacement away from the figure, or negative displacement, at a large distance from the figure.

• 公益社団法人 日本心理学会の論文

著者

• 市川 典義

  名古屋工業大学

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