Electric shocks that bring mental relief, it sounds like a paradox. Or something from a dark past. Yet neuroscientists invest a lot of time and resources in research into the possibilities of Deep Brain Stimulation, whereby the brain is controlled via electrical impulses. Hunting for Hedonia looks at the prospects of this medical technique, but also looks back: psychiatrist Robert Heath was already experimenting with electronic control of the brain in the 1950s. He disappeared from the history books, but now gets the attention he deserves as a pioneer for today’s successes. In addition to the successes and possibilities this technique also raises many ethical questions.