Please note that this title mainly consists of content that is freely available on the internet. Getting a pacemaker implanted is almost commonplace today. In contrast, a brain pacemaker is a less common aid used to stimulate the brain of a sick person. Although around 75,000 people worldwide have a brain pacemaker, patients with neurological issues still primarily rely on psychotropic medications. These drugs interfere with the neurotransmitter system in the brain, but they only affect certain areas, while others do not respond or cause side effects. In particular, patients with Parkinson's disease, whose hands tremble significantly and who are limited in their movements due to the illness, receive a brain pacemaker implant.