QUESTION:
What affect does the moon have on the brain?

ANSWER from Louis H. Ostrach on January 7, 1998:

The moon's gravitational pull has significant effects on the earth.  And 
isn't it curious that humans have used the moon's cycles to generate 
calenders and explanations of behavior for example "moonstruck" and "lunatic."

If you want to know more about the moon's affect on the brain, I can 
suggest that you do a bit of digging at the library.  Use the following 
key words to perform searches and you should come up with some interesting 
information:

-circadian rhythm
-biological clock