Inclusion Criteria:  patients between the ages of 18 and 65 with a diagnosis of characterized depressive episode according to the DSM-5 criteria able to practice indoor rower.  Exclusion Criteria:  Pregnant or breastfeeding women With major depression as part of bipolar affective disorder Presence of a suicidal risk Under Cognitive behavioral therapy or whose medication has been modified in the month preceding enrollment History of neurological pathology, head injury or mental retardation Presence of an addictive comorbidity Presence of a major organic pathology Presence of a contraindication to virtual reality exposure Presence of a contraindication to SPECT Presence of a predisposition to discomfort caused by mobile environments