I feel DBS is a complicated situation. My mom has Parkinsons. Shortly before she was diagnosed with Parkinsons, she was sent to p-doc for what my aunts believed was depression. Of course, my mom was prescribed p-meds. Those p-meds, I believe, induced delusional beliefs which weren’t there before she was on p-meds. P-doc had to “adjust” the p-meds before she “stabilized.” Ten years later, my mom got DBS. She didn’t behave like the patients described in this article — I do believe that adjustments on p-meds might have played a part in correcting the “chemical imbalance” brought on by DBS– –but she did become less of a person. Her emotions and personality were blunted. She became childlike and had no capacity to enjoy life or get upset. She’s practically a ghost. Her neurologist said that DBS saved millions of dollars in healthcare costs. But my mom is nothing but a shell of a person.