Positional loss in strabismic amblyopia: Interrelationship of alignment threshold, bias, spatial scale and eccentricity
Positional loss in strabismic amblyopia: Interrelationship of alignment threshold, bias, spatial scale and eccentricity
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DOI：
10.1016/0042-6989(95)00318-5
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发表时间：
1996-09-01
期刊：
影响因子：
1.8
通讯作者：
Hess, RF
中科院分区：
文献类型：
--
作者：
Demanins, R;Hess, RF
为了了解斜视性弱视的空间丢失及其与对比敏感度缺陷的关系，我们测量了三元素垂直排列任务的排列绩效，在该任务中，元素是等可见的空间Gabor。我们推导了阈值和偏差，并对不同空间尺度和偏心率的刺激进行了比较。我们的结果表明：(1)对齐阈值和偏差的缺陷是不相关的；(2)在大多数斜视性弱视中，这两种缺陷都是尺度不变的；(3)区域分布的形式取决于所使用的空间测量和测量它的尺度；(4)任何一种空间测量的缺陷与对比敏感度损失之间的相关性很差。版权所有(C)1996爱思唯尔科学有限公司。
In order to understand the spatial loss in strabismic amblyopia and its relationship to the contrast sensitivity deficit, we measured alignment performance for a three element vertical alignment task in which the elements were equi-visible, spatial Gabors. We derived the threshold and bias and compared these for stimuli of different spatial scale and eccentricity. Our results suggest that: (1) the deficits for alignment thresholds and bias are uncorrelated; (2) in the majority of strabismic amblyopes, both deficits are scale invariant; (3) the form of the regional distribution depends on the spatial measure used and the scale at which it is measured; and (4) there is a poor correlation between the deficit for either spatial measure and the contrast sensitivity loss. Copyright (C) 1996 Elsevier Science Ltd.