Cast. 1  Michael J. Fox as Stuart Little, a mouse adopted as the middle child of the Little family. 2  Melanie Griffith as Margalo, a canary who befriends Stuart. 3  Nathan Lane as Snowbell, the family cat.  James Woods as The 1  Falcon. Geena Davis as Eleanor Little, Stuart and George's mother.
What is Melatonin? Melatonin is the natural hormone your body secretes that helps to maintain your wake-sleep cycle (also called âbiological clockâ). The wake-sleep cycle is the process of sleep and wakefulness; in humans this averages 8 hours of nighttime sleep and 16 hours of daytime activity.
Light enters the SCN is activated. Then acts on the pineal gland to prevent the secretion of melatonin (Increased light). At night little light enters the eyes, the SCN controls the pineal gland to secrete melatonin (Decreased light). This therefore shows/ demonstrates a circadian rhythm.