I'm guessing you didn't read the article and are just responding to the title? From the article: "One promising experiment targets depression with deep brain

I'm guessing you didn't read the article and are just responding to the title? From the article: "One promising experiment targets depression with deep brain stimulation (DBS), in which electrodes implanted in the brain send steady pulses of electricity to certain problematic neural areas." and "Neuroscientists discovered years ago that this existential dread can be treated by using electricity to alter the activity of neurons, and they are now putting that knowledge to use. DBS, one of the most exciting experimental treatments for depression, uses an implanted “brain pacemaker” that sends steady pulses of electricity to certain brain regions. It’s a technology that was pioneered to stop Parkinson’s patients’ tremors, but it’s now being explored for a dizzying array of neural and psychiatric disorders, including depression, obsessive-compulsive disorder, and PTSD."