Figure 5. Time course of the light-induced responses of RSNA and cardiorespiratory responses following i.c.v. administration of melatonin and vehicle.

Grouped data showing time course of the effects of melatonin (filled circles, n = 14) and vehicle (open circles, n = 14) i.c.v. injections on light (2.1 × 10¹⁴ photons cm⁻² s⁻¹, 10 min)-induced changes in RSNA, HR, ABP and PNA.