有彩色と無彩色刺激の形態記憶

概要

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In this study, we investigate whether visual attributes of objects, such as hue, saturation, brightness, and sharpness of edge, affect on short term memory of visual pattern. In the experiment, the test stimuli composed of four simple object patterns of the same color were presented 800msec and after 10 sec delay, the observer was instructed to recall the test patterns by drawing them on the answer sheet. Achromatic test stimuli presented on the gray background were white, light gray, dark gray, and black. Three different levels of sharpness of edge were prepared for each of them to examine the effect of edge distinctness. Chromatic test stimuli presented on the gray background were red, yellow, green, and blue, and two dull colors of red and blue of which psychometric purities were approximately same as those of yellow and green to examine the effect of saturation. The stimuli of vivid red on the purple and the light-green backgrounds were added in order to find out the effect of the color difference between the object and background. The results indicate that in the achromatic stimuli sharpness of edge of the object does not affect the observer's performance, and in the chromatic stimuli saturation of the object rather than color difference between the object and background is effective for the correct recall of visual pattern.
社団法人映像情報メディア学会の論文
1997-05-19