ASYMMETRIES IN PREATTENTIVE LINE DETECTION
ASYMMETRIES IN PREATTENTIVE LINE DETECTION
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DOI：
10.1016/0042-6989(94)90076-0
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发表时间：
1994-12-01
期刊：
影响因子：
1.8
通讯作者：
BACH, M
中科院分区：
文献类型：
--
作者：
MEIGEN, T;LAGREZE, WD;BACH, M
我们测试了绝对方向和共线性对预先注意线检测不对称性的相对贡献。受试者报告了一条线的位置，这条线与背景线的方向倾斜了16度。知觉弹出强度被量化为阈值呈现时间，以正确定位突出元素。我们发现：(1)垂直背景线的阈值时间明显短于斜背景线，(2)共线背景线的阈值时间明显短于非共线背景线。我们的数据表明，前注意过程对取向梯度的敏感性是由共线性和绝对取向调制的。
We tested the relative contribution of absolute orientation and collinearity to asymmetries in preattentive line detection. Subjects reported the location of a single line that was tilted by 16 deg against the orientation of the background lines. Perceptual pop-out strength was quantified as the threshold presentation time to correctly locate the salient element. We found that (1) threshold times mere significantly shorter in vertical than in oblique background lines and that (2) threshold times were significantly shorter in collinear than in non-collinear background lines. Our data suggest that the sensitivity of preattentive processes for orientation gradients is modulated by both collinearity and absolute orientation.