Brain to Self: Incoming!

Scientists knew that cocaine triggers the release of the brain chemical dopamine.  Now a new study in rats shows that there are in fact three distinct dopamine releases, including one that occurs just before the drug arrives.  Call it the buzz of anticipation; it may help explain what drives addictive behavior in humans.

Time, 30 May 2005, pg. 79

Which, if it was important would be included in a chapter called, Why we’re addicted.