Spectral sensitivity of human infants at absolute visual threshold.
Spectral sensitivity of human infants at absolute visual threshold.
复制标题
人类婴儿在绝对视觉阈值下的光谱敏感性。
DOI：
10.1016/0042-6989(81)90004-3
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发表时间：
1981
期刊：
影响因子：
1.8
通讯作者：
Teller,DY
中科院分区：
文献类型：
--
作者：
Powers,MK;Schneck,M;Teller,DY
强迫选择优先注视技术（FPL）与红外电视观看系统一起使用，以测量1和3个月大的人类婴儿的暗适应视觉敏感度。1个月奥尔兹的绝对阈值比成人高约50倍，3个月奥尔兹的绝对阈值比成人高约10倍。1个月时的光谱灵敏度在波长大于430 nm时与CIE暗视光度函数匹配;在波长小于430 nm时灵敏度升高，但无统计学显著性。光谱灵敏度在3个月匹配的CIE暗视光度函数在所有wavelength.We得出结论，杆在人类婴儿的眼睛包含视紫红质的1个月的年龄，暗视系统的功能和更敏感的比任何锥系统的1个月的年龄，即使在非常年轻的婴儿一个单一的量子吸收可能足以产生一个行为有意义的信号在杆感光器。
The forced-choice preferential looking technique (FPL) was used in conjunction with an infrared TV viewing system to measure the dark-adapted visual sensitivity of human infants at 1 and 3 months of age. Absolute thresholds of 1-month olds were about 50 times higher than adults, and those of 3-month olds were about 10 times higher. Spectral sensitivity at 1 month matched the CIE scotopic luminosity function at wavelengths longer than 430 nm; at wavelengths shorter than 430 nm there was an elevation in sensitivity, but it was not statistically significant. Spectral sensitivity at 3 months matched the CIE scotopic luminosity function at all wavelengths.We conclude that rods in the eyes of human infants contain rhodopsin by 1 month of age; that the scotopic system is functional and more sensitive than any cone system by 1 month of age; and that even in very young infants a single quantal absorption may be sufficient to generate a behaviorally meaningful signal in a rod photoreceptor.