When we talk about emotion, we really talk about a collection of behaviors that are produced by the brain. You can look at a person in the throes of an emotion and observe changes in the face, in the body posture, in the coloration of the skin and so on.
Antonio DamasioThere are things in our lives that take up an enormous importance and that become very dominant effects in our biography. And that comes out of a variety of reasons, but fundamentally comes out of how that particular experience connects with your effective systems of response.
Antonio DamasioAll of that is constantly operating when you not only learn, but when you recall. But as you recall in a different light, the weights with which something is more probably going to be or not recalled on the next instance, are going to be changed. So you're constantly changing the way, for instance, synapses are going to fire very easily or not so easily.
Antonio Damasio