Figure 5

Typical pupil reflex of a healthy volunteer in the experiment with a series of 25 flashes at 1-s intervals. The indicated parameters are defined as follows: 1- Radius of pupil before the first flash; 2- Radius of pupil at largest constriction after the first flash; 3- Radius of pupil before the 10^th flash; 4- Radius of pupil at largest constriction after the 10^th flash; 5- Radius of pupil before the 25^th flash; 6- Radius of pupil at largest constriction after the 25^th flash; 7-Radius of pupil on reaching the plateau at 75% of pupil radius preceding the 25^th flash.