... segments of the spinal cord. Changes in pupillary size may reflect the balance of sympathetic and parasympathetic tones, and are the good measure of the sustained state of the auto-nomic function. On ... parameters of the pupillary light reflex, i.e., the latency of the constric-tion, the velocity of constriction (vc), the velocity of re-dilation (vd), the acceleration of constriction (ac), and the time ... respectively. The mean and SE of ρmax obtained in the rest before and after presentation of the movies ρmax_control are also shown (control, n = 6).Journal of NeuroEngineering and Rehabilitation 2007,...