"Nicolas Cherbuin, a psychologist at the Australian National University in Canberra, said there was still a lot that was unknown about the roles played by the two sides [of the brain], and that the site of particular brain functions could vary from person to person. So, Mr Cherbuin, and a fellow university psychologist, Cobie Brinkman, developed the high-tech hard hat.
By plugging the hard hat's thermometer, an infrared probe, into the ears of a test subject, the two psychologists can monitor which side of the brain is swinging into action as the person performs particular tasks. "The blood flow affects the temperature of the eardrum very quickly because it is very thin," Mr Cherbuin said."
From The Sydney Morning Herald