When hungry, not only our bodies long for food, our brains do too. And it appears that when it comes to social interaction, a similar thing happens. Social deprivation leads to a brain angry for social contact.
A recent study in Nature Neuroscience, led by neuroscientist Livia Tomova, showed that after a day of social deprivation, the brains of the participants lighted up when seeing pictures of people and human reunions, as much as they did looking at pictures of sugary foods when starving.
If you want to know more, check my last article at MappingIgnorance.org