The relationship between the subjective and objective aspects of visual filling-in
The relationship between the subjective and objective aspects of visual filling-in
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DOI：
10.1016/j.visres.2007.06.007
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发表时间：
2007-08-01
期刊：
影响因子：
1.8
通讯作者：
Sagi, Dov
中科院分区：
文献类型：
--
作者：
Polat, Uri;Sagi, Dov
我们探讨了填充过程和已知的检测灵敏度增加之间的关系，观察到的目标之间的共线侧翼。使用是/否检测任务，通过测量具有不同目标-侧翼距离的低对比度Gabor目标的假阳性报告（假警报，FA）和命中率（命中）来探测填充。当侧翼的距离在已知的促进横向相互作用的范围内时，观察者增加了关于目标（FA和Hit）存在的报告的数量。当靶-侧翼距离在试验中保持固定时，阻断刺激可降低报告中的偏倚。当不同的距离混合试验的偏见遵循横向相互作用的模式跨越距离。当侧翼和目标对齐时，效果最大。这些错误的知觉很可能是由产生错觉轮廓的横向激励的填充过程的结果。(C)2007爱思唯尔有限公司版权所有。
We explored the relationship between filling-in processes and the known increase in detection sensitivity observed for targets presented between collinear flankers. Filling-in was probed using a Yes/No detection task by measuring the false-positive reports (false-alarm, FA) and hit rate (Hit) for a low-contrast Gabor target with different target-flankers distances. Observers increased the number of reports on the presence of a target (FA and Hit) when the flankers' distance was within the known range of facilitatory lateral interactions. This bias in reporting was reduced with blocked stimulation, when the target-flanker distance was kept fixed across trials. When different distances were mixed by trials the bias followed the pattern of lateral interactions across distance. The effect was maximal when flankers and targets were aligned. These false perceptions are most likely the result of a filling-in process by lateral excitation that produces illusory contours. (C) 2007 Elsevier Ltd. All rights reserved.