Illumination of surrounding field and flicker fusion frequency with foveal images of different sizes.
Illumination of surrounding field and flicker fusion frequency with foveal images of different sizes.
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不同尺寸的中央凹图像的周围视野和闪烁融合频率的照明。
DOI：
10.1111/j.1748-1716.1954.tb01084.x
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发表时间：
1954
期刊：
影响因子：
--
通讯作者：
C. Berger
中科院分区：
文献类型：
--
作者：
C. Berger
方法。Sylvania辉光调制管通过电子控制光束产生闪烁（fritz和SIMONSON， 1951）。这种管提供了一个完美的方波形式的光刺激，过渡时间小于1周期长度，没有振动和噪音。每秒钟闪光的频率是通过使用电机来改变的，电机的速度可以调节，当受试者按下按钮时，电磁装置立即停止。所有其他条件保持不变（2.0 mm人工瞳孔，单眼，等明暗比，光适应眼）。动词是主语。结果是三天内按不同顺序重复实验的平均值。测试区域的视网膜照度恒定为0.87勒克斯，其直径在0.5‘到400’之间变化。每组暗背景实验在适应屏的灯光关闭后开始，持续约5分钟。未观察到可归因于黑暗适应的影响。实验采用相邻白色环绕，大图像距离为1 m，小图像距离为7.5 m，黑白混合背景距离为4.0 m。所有结果都可以直接比较，因为FFF独立于住宿
Method.A Sylvania glow-modulator tube produces flicker with an electronically controlled light-beam (FRITZE and SIMONSON, 1951). This tube provides a perfect square wave form of light-stimulus with a transition time less than 1 yo of the cycle length and is free from vibrations and noise. The frequency of light flashes p. sec. is changed by use of a motor, the velocity of which can be regulated and which is immediately stopped by an electromagnetic device, when the subject presses a button. All other conditions remain unaltered (2.0 mm artificial pupil, monocularly, equal light-dark ratio, light-adapted eye). 2 emmetropes are subjects. The results are averages of experiments repeated on three days in different order. The test-areas have a constant retinal illumination of 0.87 lux throughout and their diameters are varied between 0.5'to 400'. Each series of experiments with dark background is started after the light of the adapting screen is turned off, and lasts about 5 minutes. No effect, attributable to dark-adaptation is observed. Experiments with adjacent white surround are performed at 1 m distance for large and 7.5 m for small retinal images, and with mixed black and white backgrounds at 4.0 m. All results are directly comparable, because the FFF is independent of accommodation