111 deaths were announced every day in the past week. the latest figures on those being treated in hospital and percentage of people vaccinated have not been made available yet to us, we will bring them to you as and when we get them. scientists in a new study have successfully treated a patient with severe depression by using a so called pacemakerfor the brain . the surgically implanted device tapped into the specific brain circuit involved in depressive brain patterns and reset them. researchers said the result could be transformative for patients with long term, treatment restistant depression joining me now is dr andrew krystal, who is an author on the study and a professor of psychiarty at the university of california, san francisco. so good to have a good news story to talk about. let me ask you first of all to explain the science behind what this does. all to explain the science behind what this does. ., ,, , ., , . what this does. thank you very much. what we did what this