| facebooks being homo right now. the following two paragraphs are an excerpt from a national geographic article explaining what "love" is; what causes those feelings. It's kind of depressing, but it's true.
"One of Fisher's central pursuits in the past decade has been looking at love, quite literally, with the aid of an MRI machine. Fisher and her colleagues Arthur Aron and Lucy Brown recruited subjects who had been "madly in love" for an average of seven months. Once inside the MRI machine, subjects were shown two photographs, one neutral, the other of their loved one.
What Fisher saw fascinated her. When each subject looked at his or her loved one, the parts of the brain linked to reward and pleasure—the ventral tegmental area and the caudate nucleus—lit up. What excited Fisher most was not so much finding a location, an address, for love as tracing its specific chemical pathways. Love lights up the caudate nucleus because it is home to a dense spread of receptors for a neurotransmitter called dopamine, which Fisher came to think of as part of our own endogenous love potion. In the right proportions, dopamine creates intense energy, exhilaration, focused attention, and motivation to win rewards. It is why, when you are newly in love, you can stay up all night, watch the sun rise, run a race, ski fast down a slope ordinarily too steep for your skill. Love makes you bold, makes you bright, makes you run real risks, which you sometimes survive, and sometimes you don't."
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