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.
This is located in the SCN which is in the hypothalamus. When it is activated by lots of light (exogenous zeitgebers) entering the eyes the SCN sends a signal to the pineal gland to suppress the release of melatonin, making us feel more awake. Changes in light is an example of an exogenous zeitgeber that gives us a cue as to the time of day.