It seems likely that we may act as "fools" when we are in love. Research suggests when in love, we don't always think rationally and base many decisions on our primitive brain rather than our thinking brain. In 2005, a research team led by Fisher published a study that included the first functional MRI (fMRI) images of the brains of individuals in the throes of romantic love. They analyzed 2,500 brain scans of college students looking at pictures of someone special to them. The researchers found that primitive areas of the brain were lit up on brain scans when talking about a romantically loved one. This suggested that the neural machinery for making critical assessments of other people, especially those with whom we are romantically involved, shuts down when engaged in romantic love.