This video series is a great introduction on basic neurochemistry. The topic comes up so much that I figured it deserved it’s own thread. These videos are from an old friend I don’t speak to anymore, Dr. Loretta Breuning, PhD. She wrote a number of cool book on the subject too.

A good slideshow on the topic:

Meet Your Happy Chemicals: Dopamine, Serotonin, Endorphin, Oxytocin

Another good talk:

A little more in depth:

The Functional Neuroanatomy of Pleasure and Happiness