Patients receiving the experimental new implant would not need to undergo a complicated surgery. Deposit Photos Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. Earlier this week, the United States Food and Drug Administration (FDA) approved a human trial for a blueberry-sized brain implant intended to target treatment-resistant depression. The brain-computer interface (BCI) developed by Houston-based startup Motif Neurotech aims to deliver electrical stimulation to activate parts of the brain’s central executive network that are inactive in people with major depressive disorder. If successful, it would make this the first example of a BCI used to treat clinical depression. “The goal for this technology is that it would be the mental health equivalent of a continuous glucose monitor for diabetes,” Motif CEO and co-founder Jacob Robinson , said in an e-mailed statement.…