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以图形变化刺激进行瞳孔反应研究，实验表明：（1）空间平均亮度守恒的光栅或棋盘格图形翻转能激发起瞳孔反应，为瞬态收缩波形，与pupillaryescape相似；（2）光栅或棋盘格的空间频率的变化也能引起瞳孔反应，且反应幅度随空间频率差别增大而变大；（3）从均匀亮背景变化到棋盘格图形或者从棋盘格图形变化到黑暗背景，虽然不存在任何局部亮度增强，皆能引起瞳孔反应。实验结果明确证明了人的瞳孔反应系统除接收入射光通量控制外，也受到图象信息的作用。文中并对其作用通路作了讨论。
Experiments show that: (1) the spatial average brightness of the grating or checkerboard graphic flip can stimulate the pupillary response, transient contraction waveform, similar to pupillaryescape; (2) grating or checkerboard Changes in spatial frequency also cause pupillary responses, and the response amplitude increases with increasing spatial frequency difference; (3) changes from a uniform bright background to a checkerboard pattern or from a checkerboard pattern to a dark background, although there is no local Brightness, can cause pupil response. Experimental results clearly prove that in addition to the human pupil response to receive incident flux control, but also by the role of image information. The paper also discusses the role of access.