What constitutes an efficient reference frame for vision?

What constitutes an efficient reference frame for vision?
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什么构成了有效的视觉参考系?

DOI:
10.1038/nn914
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发表时间:
2002
影响因子:
25
通讯作者:
Grossman,EmilyD
Grossman,EmilyD
中科院分区:
医学1区
文献类型:
--
作者:
Tadin,Duje;Lappin,JosephS;Blake,Randolph;Grossman,EmilyD

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视觉需要一个参照系。这个参照系在多大程度上依赖于视觉输入的结构,而不仅仅是视网膜标志?这个问题与动态场景的感知特别相关,因为跟踪相对于视网膜的外部运动是困难的。我们测试了人类受试者区分嵌入在全局模式中的变化元素的运动和时间相干性的能力,并且其感知组织以仅引起视网膜图像微小变化的方式被操纵。连贯性歧视总是更好的地方元素被认为是有组织的全球移动的形式比当他们被认为是无组织的,单独移动的实体。我们的研究结果表明,知觉形式影响其组成特征的神经表征,并从这一点,我们提出了一个新的方法来研究知觉组织。
Vision requires a reference frame. To what extent does this reference frame depend on the structure of the visual input, rather than just on retinal landmarks? This question is particularly relevant to the perception of dynamic scenes, when keeping track of external motion relative to the retina is difficult. We tested human subjects' ability to discriminate the motion and temporal coherence of changing elements that were embedded in global patterns and whose perceptual organization was manipulated in a way that caused only minor changes to the retinal image. Coherence discriminations were always better when local elements were perceived to be organized as a global moving form than when they were perceived to be unorganized, individually moving entities. Our results indicate that perceived form influences the neural representation of its component features, and from this, we propose a new method for studying perceptual organization.
DOI: 10.1093/cercor/1.1.1
发表时间: 1991-01-01
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在没有图案环绕的情况下运动后的视觉效果减少或消失
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