Sun F C, Liu H K, Liu Y M
Sci Sin. 1981 Jun;24(6):872-84.
Under low background illumination, the pupil responds only to an increase in light intensity by a transient constriction when the extent and rate of the increase exceed a certain values. We term this response the dynamic papillary response in order to differentiate it from the much more sluggish and much less pronounced response moiety that governs the static pupil size according to the level of light adaptation. The characteristics of the dynamic response are studied in some detail. This virtually unidirectional rate sensitivity of pupil to light renders it difficult to be subjected to frequency-response analysis even by small signal approximation. Analysis of the experimental results suggests that this transient response is a light-precipitated confluence of few consecutive hippus.
在低背景光照条件下，当光强度的增加幅度和速率超过一定值时，瞳孔仅通过短暂收缩对光强度增加做出反应。我们将这种反应称为动态瞳孔反应，以便将其与根据光适应水平控制静态瞳孔大小的更为缓慢且不太明显的反应部分区分开来。我们对动态反应的特征进行了较为详细的研究。瞳孔对光的这种几乎单向的速率敏感性使得即使通过小信号近似也难以对其进行频率响应分析。对实验结果的分析表明，这种瞬态反应是几次连续瞳孔振荡的光诱发融合。
