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Progress and issues of the study on the shading perception are reviewed. Shading is the gradual change of the luminous intensity which is often generated on an object when the light souce (e.g. the Su...n) illuminates it. Our visual system is able in recover three dimensional world by using the shading information as a depth cue. It has been considered that the shading information is processed in the higher-order visual process. However, recent studics suggest that the information can be also extracted in the lower-order visual process and these proposals are supported by some neurophysiological evidences. This review is organized as follows: (1) two constraints in the shading perception, (2) the research method to investigate the shading perception. (3) the processing of the shading information in the higher and lower-order vision. (4) the predominance of the left light source, (5) the shading perception in animal and infant vision, and (6) neurophysiological evidence of the shading perception.続きを見る
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Mendeley出力
KJ00000048925-00001