Fig. 2From: Numerical study of entrainment of the human circadian system and recovery by light treatmentPlot of model dynamics during 48 h for the nominal parameters in Table 1. The light input I (in units of lux), having a 24-h period, results in a stable 24-h sleep-wake cycle, as manifested by the behaviors of seven dynamical variables: n, x, x c , H as well as cell potentials V v , V m , and V o (in units of mV)Back to article page