Figure 6
From: Melatonin the "light of night" in human biology and adolescent idiopathic scoliosis
Effects of exogenous melatonin on nucleus suprachiasmatic neuronal activity (SCN). At the beginning of the night melatonin causes a phase advance (dashed line) and in the early morning hours causes a phase delay (dotted line)-MT2 receptors. (Modified from [89]).