Some parallels between pupillary 'reflexes' and brightness discrimination.

Abstract

Expts. in which the light reaching the 2 eyes was independently controlled were conducted. The pupillary reflexes were recorded by infrared photography. The 2 eyes were subjected to series of stimulus manipulation and when both the pupil behavior and the sensory discriminations were taken into account, certain quantitative parallels were demonstrated. These situations involved differential stimulation of a single eye as well as both eyes.