The what and why of perceptual asymmetries in the visual domain.
The what and why of perceptual asymmetries in the visual domain.
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DOI：
10.2478/v10053-008-0080-6
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发表时间：
2010-12-15
影响因子：
1.2
通讯作者：
Kojima H
中科院分区：
文献类型：
--
作者：
Karim AK;Kojima H
感知的不对称性是我们视觉系统的重要特征之一 功能我们仔细查阅了科学文献， 这种不对称性，将它们分为两大类： 不对称和视野间不对称。我们解释这些不对称性 在知觉方面或任务方面， 不对称;以及在潜在机制方面， 不对称性视野内的不对称性是 定向、运动方向和空间频率处理。视间 场不对称已经被报道用于广泛的感知现象。 尤其是中央凹在边缘的优势， 视觉敏锐度、对比敏感度和颜色辨别力。这也适用于 对于物体或面部识别和阅读性能为真。上下视觉 有利于较低的场不对称性已被证明为时间和 对比敏感度、视敏度、空间分辨率、方向、色调和 动作处理相比之下，上场优势已经在 视觉搜索、外观尺寸和物体识别任务。左右视觉 场不对称性包括空间上的左场优势（例如， 定向）处理和非空间中的右场优势（例如， 时间）处理。左场在低空间频率下也更好， 全局和坐标空间处理，而右场更擅长 高空间频率或局部和分类空间处理。所有这些 不对称性有天生的神经/生理起源，主要的 为什么，但也可以容易受到视觉经验， 关键原因（促进或阻止不对称， 改变神经功能）。
Perceptual asymmetry is one of the most important characteristics of our visual functioning. We carefully reviewed the scientific literature in order to examine such asymmetries, separating them into two major categories: within-visual field asymmetries and between-visual field asymmetries. We explain these asymmetries in terms of perceptual aspects or tasks, the what of the asymmetries; and in terms of underlying mechanisms, the why of the asymmetries. Tthe within-visual field asymmetries are fundamental to orientation, motion direction, and spatial frequency processing. between-visual field asymmetries have been reported for a wide range of perceptual phenomena. foveal dominance over the periphery, in particular, has been prominent for visual acuity, contrast sensitivity, and colour discrimination. Tthis also holds true for object or face recognition and reading performance. upper-lower visual field asymmetries in favour of the lower have been demonstrated for temporal and contrast sensitivities, visual acuity, spatial resolution, orientation, hue and motion processing. Iin contrast, the upper field advantages have been seen in visual search, apparent size, and object recognition tasks. left-right visual field asymmetries include the left field dominance in spatial (e.g., orientation) processing and the right field dominance in non-spatial (e.g., temporal) processing. left field is also better at low spatial frequency or global and coordinate spatial processing, whereas the right field is better at high spatial frequency or local and categorical spatial processing. All these asymmetries have inborn neural/physiological origins, the primary why, but can be also susceptible to visual experience, the critical why (promotes or blocks the asymmetries by altering neural functions).