盲点边界的精细测量

IF 1.5 4区 心理学 Q4 NEUROSCIENCES
Annegret Meermeier , Markus Lappe , Yuanhao H. Li , Katharina Rifai , Siegfried Wahl , Michele Rucci
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引用次数: 0

摘要

盲点对于观看来说既是必要的,也是令人讨厌的。它是投射到视神经与视网膜交叉处的视野部分,该区域缺乏光感受器,因此缺乏视觉输入。到目前为止,视力在盲点边缘转变为失明的确切方式尚不清楚。绘制这种转变图的一个主要挑战是眼睛的不断运动,这不可避免地会使测量结果在太空中模糊。在这项研究中,我们使用高分辨率的眼睛跟踪和最先进的视网膜稳定来精细绘制盲点边界。参与者报告了微小的高对比度探针的出现,这些探针在盲点周围的精确位置短暂闪烁。这种方法具有足够的分辨率,能够根据心理物理学测量绘制血管图。我们的数据表明,即使考虑到眼球运动,盲点边缘的过渡区也是相当大的。在水平子午线上,检测率在80%和20%之间的区域大约占盲点总宽度的25%。这些边界在不同轴上的大小也有很大差异。这些数据表明,在盲点边界从完全可见到失明的转变并不突然,而是发生在广阔的区域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fine-scale measurement of the blind spot borders

The blind spot is both a necessity and a nuisance for seeing. It is the portion of the visual field projecting to where the optic nerve crosses the retina, a region devoid of photoreceptors and hence visual input. The precise way in which vision transitions into blindness at the blind spot border is to date unknown. A chief challenge to map this transition is the incessant movement of the eye, which unavoidably smears measurements across space. In this study, we used high-resolution eye-tracking and state-of-the-art retinal stabilization to finely map the blind spot borders. Participants reported the onset of tiny high-contrast probes that were briefly flashed at precise positions around the blind spot. This method has sufficient resolution to enable mapping of blood vessels from psychophysical measurements. Our data show that, even after accounting for eye movements, the transition zones at the edges of the blind spot are considerable. On the horizontal meridian, the regions with detection rates between 80% and 20% span approximately 25% of the overall width of the blind spot. These borders also vary considerably in size across different axes. These data show that the transition from full visibility to blindness at the blind spot border is not abrupt but occurs over a broad area.

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来源期刊
Vision Research
Vision Research 医学-神经科学
CiteScore
3.70
自引率
16.70%
发文量
111
审稿时长
66 days
期刊介绍: Vision Research is a journal devoted to the functional aspects of human, vertebrate and invertebrate vision and publishes experimental and observational studies, reviews, and theoretical and computational analyses. Vision Research also publishes clinical studies relevant to normal visual function and basic research relevant to visual dysfunction or its clinical investigation. Functional aspects of vision is interpreted broadly, ranging from molecular and cellular function to perception and behavior. Detailed descriptions are encouraged but enough introductory background should be included for non-specialists. Theoretical and computational papers should give a sense of order to the facts or point to new verifiable observations. Papers dealing with questions in the history of vision science should stress the development of ideas in the field.
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