Hong Sang Wook, Shevell Steven K
Department of Psychology, University of Chicago, Chicago, IL, USA.
Vis Neurosci. 2004 May-Jun;21(3):353-7. doi: 10.1017/s0952523804213037.
Modern theories of brightness induction include an influence from regions that do not share a border with the target. This study tested whether the spatial range of neural integration is the same with incremental versus decremental contrast edges in relatively remote parts of the background. Using an asymmetric matching task, observers set the brightness of a comparison ring, within its own uniform surround, to match the brightness of a test ring within a contiguous surround and a noncontiguous background. The measurements showed that the area of integration depended on the incremental versus decremental contrast polarity at the edge between the surround and background. This implies that brightness induction from an inhomogeneous background must consider the polarity of contrast edges within the whole scene.
现代亮度诱导理论包括来自与目标不共享边界区域的影响。本研究测试了在背景相对较远的部分，神经整合的空间范围在增加对比度边缘与减少对比度边缘时是否相同。使用非对称匹配任务，观察者在其自身均匀的背景中设置比较环的亮度，以匹配在连续背景和非连续背景中的测试环的亮度。测量结果表明，整合区域取决于背景和背景之间边缘处增加与减少的对比度极性。这意味着来自不均匀背景的亮度诱导必须考虑整个场景中对比度边缘的极性。
