An extensive article on the dirty tricks that infatuation plays on the brain. Said tricks include spiking levels of dopamine (the hormone triggered by most illegal drugs), lowering serotonin to levels that mimic obsessive-compulsive disorder, shutting off the fear-producing amygdala, and generally stirring the limbic system with a big old crazy stick.
It was only in 2000 that two London scientists selected 70 people, all in the early sizzle of love, and rolled them into the giant cylinder of a functional magnetic resonance imaging scanner, or fMRI. The images they got are thought to be science’s first pictures of the brain in love.
The pictures were a revelation, and others have followed, showing that romantic love is a lot like addiction to alcohol or drugs. The brain is playing a trick, necessary for evolution, by associating something that just happened with pleasure and attributing the feeling to that magnificent specimen right before your eyes.
But my favorite nugget is in the sidebar. According to one psychologist, the key to a lasting marriage isn’t love or common interests. It’s the lack of attractive alternatives.
The best predictor of divorce, Aron says, has little to do with love, even less to do with initial attraction. It has to do with the availability of other options. If people are happy, other options are less appealing and they’re more likely to stay married. If they’re unhappy but can’t imagine an alternative that isn’t even worse, again, they’ll stay married. (This is the probable reason many abused women stay in their relationships.)
It’s not the first research to suggest that too much choice can be problematic.