Recording from Wellcome Trust Press Conference (audio) Wellcome Trust Share Print E-Mail Loading audio... Caption Professor Geraint Rees and Dr Ryota Kanai explain their findings about the link between number of Facebook friends and the size of certain brain regions. Credit Image courtesy of the Wellcome Trust Usage Restrictions For background only. Not to be reproduced Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.