People who have more Facebook friends have more gray matter in their brains, a finding that may spur further research on the relationship between social networking and the mind, U.K. researchers said. A strong correlation was found between the number of Facebook connections and the amount of gray matter, or brain tissue responsible for processing signals, according to research led by Geraint Rees, a senior clinical research fellow at University College London. The results, based on magnetic resonance imaging of 125 college students’ brains, was published today in the journal Proceedings of the Royal Society B.
