Laughter's the medicine - but what's it for? by SBS News published on 2013-05-26T03:16:02Z Dr Tamara Watson is a Post Doctoral Research Fellow in Visual Neuroscience at the University of Western Sydney. Her research involves neuroimaging and behavioural studies which look at how the brain deals with visual input. She's an expert in the visual brain and recently wrote about the many types of laughter that humans engage in with one another. She talks to SBS Journalist Bill Code about some recent studies shining a light on that most human of reactions.