Burbeck C A
Psychology Department, University of North Carolina, Chapel Hill 27599-3270.
Vision Res. 1992 Dec;32(12):2295-302. doi: 10.1016/0042-6989(92)90093-x.
Previous research has shown that separation discrimination thresholds are independent of the internal spatial scale (local spatial frequency) of the targets whose separation is being judged. The experiments reported here tested the generality of this conclusion for separation discrimination of targets that were embedded in an array of identical objects, where crowding could enhance the importance of the scale at which the individual target locations are encoded. No effect of the local spatial scale of the targets was found under these conditions.
先前的研究表明，分离辨别阈值与被判断分离的目标的内部空间尺度（局部空间频率）无关。本文所报告的实验测试了这一结论对于嵌入在一系列相同物体中的目标的分离辨别的普遍性，在这种情况下，拥挤效应可能会增强对各个目标位置进行编码的尺度的重要性。在这些条件下，未发现目标局部空间尺度的影响。
