Wednesday, July 27, 2011

For Whom The Bell Tolls

Pavlovian conditioning is the classic example of associative learning. A dog that always hears a bell ring immediately prior to being fed will eventually salivate at the mere sound of the bell. At the heart of this type of learning is the feel-good neurotransmitter dopamine, which helps animals make positive associations to stimuli that herald pleasurable outcomes. But there’s a flip side to dopamine signaling: the development of addictive behaviors. more

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