Clinical Research Directory

Inclusion Criteria: * Age between 18 and 75 years, * Diagnosis of major depressive episode (MDE) as part of major depressive disorder as defined by DSM-5 criteria * Severe MDE (HDRS-17\> 20) * Drug resistance to at least two well-conducted antidepressant treatment lines * With stable antidepressant treatment for at least 4 weeks before inclusion * Benefiting from a social security scheme * Having given their consent to participate Exclusion Criteria: * Psychiatric history other than a mood disorder * Neurological history, including epilepsy and intracerebral calcifications * History of substance use disorder other than tobacco * Contraindication to brain MRI (pacemaker, neurostimulator, injury from metallic shine, …) * Compulsory psychiatric care * Protected adults, people under legal safeguard * Pregnant or breastfeeding woman * Women of childbearing age who do not have a negative pregnancy test and are not using contraception