Modern Pupillometry
Pupillometry, the study of the eyes’ pupils, has a rich history, dating back to the 1800s. For example, to appear “dark with desire,” women once used atropa belladonna (deadly nightshade) as a cosmetic, because the atropine dilated their pupils, making them appear more romantically aroused. We now know that this relationship is largely driven by the activity of the sympathetic nervous system; spe...
Pupillometry, the study of the eyes’ pupils, has a rich history, dating back to the 1800s. For example, to appear “dark with desire,” women once used atropa belladonna (deadly nightshade) as a cosmetic, because the atropine dilated their pupils, making them appear more romantically aroused. We now know that this relationship is largely driven by the activity of the sympathetic nervous system; spe...