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本实验以被试的反应时为指标,用速示器呈现实验刺激,通过系统改变诱导区域的面积和反射率对主观轮廓知觉进行了研究。实验结果表明:随着主观轮廓图形诱导面积的减小和诱导部分反射率的增加,明度对比减弱,被试的反应时增加,并且各反应时之间存在显著差异。这表明诱导部分的面积和反射率都以明度对比为中介引起了主观轮廓知觉的系统改变。这说明视觉系统中侧抑制引起的明度对比在主观轮廓知觉中起重要作用。
In this experiment, the reaction time of the subjects was taken as an index, and the experimental stimuli were presented with a beacon. The subjective contour perception was studied by changing the area and the reflectivity of the induced area systematically. The experimental results show that with the reduction of the induced area and the increase of the reflectivity induced by the subjective contour pattern, the contrast of lightness is weakened, and the response time of subjects increases, and there is a significant difference between the responses. This indicates that both the area and the reflectivity of the induced part are caused by the lightness contrast as a mediator which causes the systematic change of subjective contour perception. This shows that the contrast of lightness caused by lateral inhibition in the visual system plays an important role in subjective contouring.