Figure 2
From: Quantification of the early pupillary dilation kinetic to assess rod and cone activity
Pupil response curve and derivative analysis of Dataset 2 to blue light stimuli presented under dark-adapted condition. (A) The mean relative pupil size (plain line) before, during and after a 1 s light stimulus is plotted against time (response curve). The different colors represent the different stimulus intensities from − 5 log cd/m2 to 1.5 log cd/m2. (B) The mean derivative responses plotted for the first 3 s of the pupil recordings shown in (A). The shaded box represents the duration of the light stimulus. Three parameters were obtained by quantification of the derivative curve: the maximal positive peak amplitude (dAMP) (C), the latency of dAMP (D) and the area under the curve of the positive peak of the derivative (dAUC) (E) are presented as distribution plots. The median (long horizontal bar) and the interquartile range (short horizontal bar) are superposed at each stimulus intensity.
