Gaze-contingent simulation of retinopathy: Some potential pitfalls and remedies
Gaze-contingent simulation of retinopathy: Some potential pitfalls and remedies
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DOI：
10.1016/j.visres.2011.02.010
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发表时间：
2011-05-11
期刊：
影响因子：
1.8
通讯作者：
Castet, Eric
中科院分区：
文献类型：
--
作者：
Aguilar, Carlos;Castet, Eric
视觉神经科学中的许多重要成果都依赖于视注视而定的视网膜稳定技术的使用。我们的工作集中在这些研究中的重要部分，即与降低视野某些特定部分的视觉滤波器的视网膜稳定有关。例如，通常由年龄相关性黄斑变性引起的黄斑暗点可以通过在视野的中心连续地显示注视视情况而定的掩模来模拟。在大多数这些研究中使用的凝视偶然规则意味着只有一个非常小的处理眼睛的数据。通过分析不同眼动模式的凝视和暗点位置之间的关系，我们发现，这样一个最小的处理可能会产生不利的感知和视力的后果，主要是由于两个潜在的问题：（a）一个短暂的眨眼引起的运动的暗点，而凝视是静态的，和（B）入侵后扫视缓慢的眼球运动。我们已经开发了新的凝视偶然规则来解决这两个问题。我们还提出了解决两个未被认识到的问题的简单方法，这两个问题是凝视和暗点位置之间不匹配的潜在来源。总体而言，目前的工作应该有助于设计，描述和测试用于模拟视网膜病变的凝视视情况显示的范例。(C)2011爱思唯尔有限公司版权所有。
Many important results in visual neuroscience rely on the use of gaze-contingent retinal stabilization techniques. Our work focuses on the important fraction of these studies that is concerned with the retinal stabilization of visual filters that degrade some specific portions of the visual field. For instance, macular scotomas, often induced by age related macular degeneration, can be simulated by continuously displaying a gaze-contingent mask in the center of the visual field. The gaze-contingent rules used in most of these studies imply only a very minimal processing of ocular data. By analyzing the relationship between gaze and scotoma locations for different oculo-motor patterns, we show that such a minimal processing might have adverse perceptual and oculomotor consequences due mainly to two potential problems: (a) a transient blink-induced motion of the scotoma while gaze is static, and (b) the intrusion of post-saccadic slow eye movements. We have developed new gaze-contingent rules to solve these two problems. We have also suggested simple ways of tackling two unrecognized problems that are a potential source of mismatch between gaze and scotoma locations. Overall, the present work should help design, describe and test the paradigms used to simulate retinopathy with gaze-contingent displays. (C) 2011 Elsevier Ltd. All rights reserved.