Dr. Martijn Figee, a research psychiatrist at Mount Sinai Hospital in New York, has visited Sant Pau because of the scientific interest that this centre in the United States has in the Deep Brain Stimulation in Schizophrenia project led by Dr. Iluminada Corripio, a psychiatrist in the Sant Pau Psychiatry Service. This project is one of the studies carried out by the Psychiatric Disorders Research Group of the IIB Sant Pau, coordinated by Dr. María Portella. This research group is completed by Dr. Sandra Roldan, Dr. Carlos Garcia Rivera and Dr. Anna Alonso Solis.