相关实验视频
Updated: Sep 11, 2025

04:43
Visualizing Visual Adaptation
Published on: April 24, 2017
9.1K
亮度对比导致现实世界物体的红绿平衡变化
概括
周围的亮度引起的色彩感知转变在现实世界观看中仍然存在. 这些效应,观察到特定的有色物体和观看条件,不同于以前的基于监视器的实验,表明独特的现实世界的视觉处理.
科学领域:
- 视觉科学科学 视觉科学
- 颜色感知 颜色感知
- 视觉适应 视觉适应
背景情况:
- 颜色恒定性和视觉适应性对于稳定的色彩感知至关重要.
- 之前的研究表明,由周围环境诱导的红/绿平衡转移主要在受控的基于监视器的实验中观察到.
- 在现实世界观看条件下,这些效应的持久性仍然是一个悬而未决的问题.
研究的目的:
- 调查由明亮和黑暗环境引起的红/绿平衡转移是否在现实世界观看条件下持续存在.
- 为了比较现实世界色彩诱导效应与之前在基于监视器的研究中观察到的效应.
- 确定物体颜色和周围属性的对这些效应的影响.
主要方法:
- 12名受试者对现实世界中的物体 (棕色,色,天蓝色,蓝色盒子) 进行了红/绿平衡匹配.
- 在模拟的日光下,在一个黑色或白色表面的室内观察物体.
- 用黑色或白色的纸张和剪纸对物体进行部分遮蔽,以模拟特定的观看条件.
主要成果:
- 显著的红色/绿色平衡转移仅发生在物体被剪切的纸 (白色或黑色) 部分遮住时.
- 这些效应被观察到棕色,色和天空蓝色的物体,天空蓝色显示相反的方向效应.
- 观察到的效应的方向与之前的基于监视器的实验形成鲜明对比,特别是对于天空蓝色的物体.
结论:
- 现实世界观看条件可以诱导显著的红/绿平衡转移,类似于实验室设置.
- 这些现实世界的诱导效应并不总是相当于基于监视器的实验中发现的效应.
- 对象的颜色和特定的观看配置 (例如,部分遮蔽) 在调节色彩适应效应方面起着至关重要的作用.
相关概念视频
Color Vision
698
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
698
Photoreceptors and Visual Pathways
6.5K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.5K
Perceptual Constancy
532
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
532
Indicators
49.3K
Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are...
49.3K
Anatomy of the Eyeball
7.6K
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
7.6K
Changes in Skin Color: Clinical Perspectives
2.2K
The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
2.2K

