Shocks to the Brain and Math

http://www.nature.com/news/shocks-to-the-brain-improve-mathematical-abilities-1.13012?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+C2C-InTheNews+%28Feed+-+Coast+to+Coast+-+In+the+News%29
http://www.bbc.co.uk/news/health-22556735
http://www.guardian.co.uk/science/2013/may/16/electric-shocks-brain-maths-scientists