Monocular Perception of Equidistance: The Effects of Viewing Experience and Motion-generated Information
Monocular Perception of Equidistance: The Effects of Viewing Experience and Motion-generated Information
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DOI：
10.1097/opx.0000000000001878
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发表时间：
2022-05-01
影响因子：
1.4
通讯作者：
Pan，Jing Samantha
中科院分区：
文献类型：
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作者：
Chen，Shenying;Li，Yusi;Pan，Jing Samantha
目的本研究调查正常观察者在不同的观看环境、各种光学信息和单眼观看体验下，是否能够用一只眼睛准确、精确地感知等距。方法16名视力正常的观察者单眼感知目标与自身之间的距离（5至30 m），并在一些包含大量静态单眼深度信息但视野有限的走廊或包含较少深度信息但视野较大的草坪上复制它。参与者在执行任务之前保持静止或步行 5 m，作为对动态深度信息可用性的操纵。八名观察者在实验前佩戴眼罩 3 小时并获得了单眼观看体验，而其他人则没有。准确度和精确度都得到了测量。 结果只要静态单目深度信息可用，等距感知实际上是准确的，尽管有微小的低估。通过之前的单眼行走和/或单眼经验，感知精度得到了提高。准确度和精密度不受观看环境的影响。结论使用静态和动态单眼深度信息和/或单眼经验，正常观察者能够以可靠的准确度和精密度判断等距。这意味着单眼视觉患者比本研究的参与者适应得更好，也应该能够在自然观看环境中感知等距离并执行与距离相关的任务。
PURPOSEThis study investigated whether normal observers could accurately and precisely perceive equidistance with one eye, in different viewing environments, with various optical information and monocular viewing experience.METHODSSixteen normally sighted observers monocularly perceived the distance (5 to 30 m) between a target and the self and replicated it either in some hallways that contained ample static monocular depth information but had a limited field of view or on a lawn that contained less depth information but had a large field of view. Participants remained stationary or walked 5 m before performing the task, as a manipulation of the availability of dynamic depth information. Eight observers wore eye patches for 3 hours before the experiment and gained monocular viewing experience, whereas the others did not. Both accuracy and precision were measured.RESULTSAs long as static monocular depth information was available, equidistance perception was effectively accurate, despite minute underestimation. Perception precision was improved by prior monocular walking and/or experience with monocularity. Accuracy and precision were not affected by the viewing environments.CONCLUSIONSUsing static and dynamic monocular depth information and/or with monocular experience, normal observers judged equidistance with reliable accuracy and precision. This implied that patients with monocular vision, who are better adapted than participants of this study, should also be able to perceive equidistance and perform distance-dependent tasks in natural viewing environments.