THE SALIENCE OF VERTICAL SYMMETRY
THE SALIENCE OF VERTICAL SYMMETRY
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DOI：
10.1068/p230221
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发表时间：
1994-01-01
期刊：
影响因子：
1.7
通讯作者：
WENDEROTH, P
中科院分区：
文献类型：
--
作者：
WENDEROTH, P
长期以来人们一直认为，在双边对称的图案中，对称轴垂直的图案比对称轴处于其他方向的图案更显着对称。关于对称轴其他方向的相对显着性的证据有些模棱两可。在实验 1 中，当对称轴位于 18 个不同方向之一（间隔 10 度）（从垂直到水平的顺时针和逆时针方向）时，要求受试者区分对称或随机点图案。数据表明，垂直方向最显着，然后是水平方向，但与对比灵敏度的经典倾斜效应不同，精确对角轴的性能优于周围轴方向的性能。附加数据（来自实验 2 和 3）还表明，可以通过改变呈现的刺激范围来广泛地操纵垂直和水平对称轴的显着性，大概是通过操纵观察者采用的扫描或注意力策略。先前许多关于对称感知的研究可能将垂直对称的硬连线显着性与扫描或注意力策略混为一谈。
It has long been accepted that amongst patterns which are bilaterally symmetrical, those which have their axis of symmetry vertical are more saliently symmetrical than patterns whose axis of symmetry is at some other orientation. The evidence regarding the relative salience of other orientations of axis of symmetry is somewhat more equivocal. In experiment 1, subjects were required to discriminate between symmetric or random-dot patterns when the axis of symmetry was at one of eighteen different orientations, spaced 10-degrees apart, both clockwise and counterclockwise of vertical to horizontal. The data indicated that vertical was most salient, then horizontal but that, unlike in the classical oblique effect for contrast sensitivity, performance for precisely diagonal axes was better than that for surrounding axis orientations. Additional data (from experiments 2 and 3) also showed that the salience of vertical and horizontal axes of symmetry can be manipulated extensively by varying the range of stimuli presented, presumably by manipulating the scanning or attentional strategy adopted by the observer. Many previous studies of symmetry perception may have confounded hard-wired salience for vertical symmetry with scanning or attentional strategies.