BACKGROUND ADAPTATION IN HUMAN INFANTS
BACKGROUND ADAPTATION IN HUMAN INFANTS
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DOI：
10.1016/0042-6989(86)90092-1
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发表时间：
1986-01-01
期刊：
影响因子：
1.8
通讯作者：
HARRIS, SJ
中科院分区：
文献类型：
--
作者：
HANSEN, RM;FULTON, AB;HARRIS, SJ
人类婴儿检测10 ° C的阈值在暗适应条件下和存在稳定红色背景的情况下，使用优先观察方法确定直径50和1000毫秒的刺激。暗适应敏感性和增量阈值函数的线性部分的斜率随年龄增加。斜率在4周时为0.5，但到10周时，其与成人值没有差异（约1.0）。在所有年龄段，本征值与成人的本征值大致相同（-2.3 log scot。td）。这些结果表明，视觉机制参与检测闪光和适应稳定的背景光成熟出生后。
Human infants'' thresholds for detecting 10.degree. diameter 50 and 1000 msec stimuli in the dark adapted condition and in the presence of steady red backgrounds were determined using a preferential looking method. Dark adapted sensitivity and the slope of the linear portion of the increment threshold function increased with age. The slope was 0.5 at 4 weeks, but by 10 weeks it was not different from the adult value (.apprx. 1.0). At all ages the eigengrau was approximately the same as that of adults (-2.3 log scot. td). These results suggest that visual mechanisms involved in detection of flashes and adaptation to steady background lights mature postnatally.