This mini lecture explains how neurotransmitters move from neuron (nerve cell) to neuron within the brain. When the neurotransmitter system is malfunctioning then psychiatric symptoms emerge.
Source: Video created by Darla Dunlop at ddunlop@msmc.la.edu
Discovery Channel describes how neurons work within the brain.
Source: Discovery Channel on YouTube: http://www.youtube.com/watch?v=yK9iOMNiYjg&list=PL3AAEBD8032807A0E