A toucan that has a fractured leg receives a shock wave treatment at the veterinary hospital in Brasilia Zoo, July 30, 2015. The zoo's veterinary hospital uses acupuncture and laser therapy to improve the health and well-being of animals with chronic diseases. REUTERS/Ueslei Marcelino 

An electroconvulsive therapy machine from the St Audry's Hospital asylum in Suffolk, which closed in 1993, is seen at an exhibition at the Wellcome Collection in London March 27, 2012. We've pickled it, dessicated it, drilled it, mummified it, chopped it and sliced it over centuries, yet as the most complex entity in the known universe, the human brain remains a mysterious fascination.With samples of Albert Einstein's preserved brain on slides, and specimens from other famous and infamous heads such as the English mathematician Charles Babbage and notorious mass murderer William Burke, an exhibition opening in London this week is seeking to tap into that intrigue. The exhibition Brains: The Mind As Matter runs from March 29 to June 17. REUTERS/Chris Helgren (BRITAIN - Tags: SCIENCE TECHNOLOGY SOCIETY HEALTH)