Hunting for Hedonia

In the 1960s, Robert Heath was one of the most renowned neurologists in the world. His research on deep brain stimulation used electrodes in the brain to stimulate feelings of happiness and to suppress negative emotions. However, his methods proved too controversial and ultimately destroyed his reputation.
Decades later, with psychological problems such as depression and anxiety becoming more common, scientists are re-examining the possibilities of deep brain stimulation. While there has been some success, old ethical dilemmas are beginning to rise up like ghosts from the past. Could tiny wires in our brain really hold the key to happiness?