the love prime evoked more activation in bilateral angular gyri and bilateral fusiform regions than the hobby prime. These regions are associated with integrating abstract representations, and the angular gyrus in particular is involved with abstract representations of the self. The authors also found a correlation (r=0.496, p=0.002) between activation of a region of the angular gyrus with a passionate-love scale measuring subjective feelings of love. Love and motivation Conscious thoughts about a romantic partner activate brain regions related to reward and motivation. Ortigue et al. investigated whether unconscious priming by a partner's name could also affect motivation. They found that priming by either a beloved or a favorite hobby improved reaction times in identifying whether a string of letters was a word or not compared against priming by a neutral friend. The authors suggest this effect happens because a beloved's name "may call for a goal-directed state" and produce "dopaminergic-driven facilitation effects." Joseph Butler believed the human race was made of six senses instead of five. The sixth sense being empathy. Empathy is what makes humans different from other mammals. Empathy allows humans to experience love and to build bonds. The moral that humans gain from empathy allow them to repair and rebuild bonds based from empathy. See also Biology and sexual orientation Interpersonal attraction Religious views on love Lovesickness Neuroanatomy of intimacy Oxytocin References External links The Nature of Love (1958) - Harry Harlow, American Psychologist, 13, 573-685 Harry Harlow - A Science Odyssey: People and Experiments - eScienceCommons: The Science of Love - HowStuffWorks: How Love Works - The Age: Your dopamine or mine ? Interpersonal attraction Sociobiology Love