Redies C
Montreal Neurological Institute, Québec, Canada.
Neurosci Biobehav Rev. 1989 Spring;13(1):17-22. doi: 10.1016/s0149-7634(89)80047-8.
If a segment of a line differs in luminance or color from the rest of the line, three illusory phenomena may be perceived: a reduction in contrast of the line segment relative to the background, subjective contours running perpendicularly to the ends of the line segment, and spread of color or brightness surrounding the line segment. All three phenomena cause a perceptual enhancement of the line discontinuity. Their psychophysical properties and possible neurophysiological correlates in the visual cortex are discussed. Contrast reduction has characteristics similar to end-stopped neuronal responses. Subjective contours elicit orientation-specific neuronal responses in areas 17 and 18. Neon color and brightness spreading may be mediated by "dot-responsive" cells in area 19.
如果一条线段在亮度或颜色上与该线条的其余部分不同，可能会感知到三种错觉现象：相对于背景而言，该线段的对比度降低；主观轮廓垂直于该线段的端点延伸；该线段周围颜色或亮度的扩散。所有这三种现象都会导致对线不连续性的感知增强。文中讨论了它们的心理物理学特性以及在视觉皮层中可能的神经生理学关联。对比度降低具有类似于终端停止神经元反应的特征。主观轮廓在17区和18区引发特定方向的神经元反应。霓虹色和亮度扩散可能由19区的“点响应”细胞介导。
