使用静态深度信息,正常观察者单眼感知等距离精度高。具有动态深度信息和/或单目观看体验,他们以高精度感知。因此,单眼患者,他们适应了单目观看,应该能够感知等距并执行相关任务。
这项研究调查了正常观察者是否可以用一只眼睛准确准确地感知等距,在不同的观看环境中,具有各种光学信息和单目观看体验。
16名正常视力的观察者单眼感知到目标与自我之间的距离(5到30米),并在一些包含充足的静态单眼深度信息但视野有限的走廊或草坪上复制它包含较少的深度信息但视野较大。参与者在执行任务之前保持静止或步行5米,作为对动态深度信息可用性的操纵。8名观察者在实验前佩戴了3个小时的眼罩,获得了单眼观看经验,而其他人没有。测量了准确度和精密度。
只要静态单眼深度信息可用,等距感知有效准确,尽管分钟低估了。先前的单眼行走和/或单眼体验提高了感知精度。准确性和精度不受观看环境的影响。
使用静态和动态单眼深度信息和/或单眼体验,正常观察者以可靠的准确性和精度判断等距。这意味着单眼视觉的患者,他们比这项研究的参与者更适应,还应该能够感知等距并在自然观看环境中执行与距离相关的任务。
Using static depth information, normal observers monocularly perceived equidistance with high accuracy. With dynamic depth information and/or monocular viewing experience, they perceived with high precision. Therefore, monocular patients, who were adapted to monocular viewing, should be able to perceive equidistance and perform related tasks.
This 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.
Sixteen 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.
As 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.
Using 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.