Emotional Memory Reactivation in Posttraumatic Stress Disorder

Inclusion Criteria: * Patients of French mother language * Right-handed patients * Signature of the consent Patients: * Patients whose diagnosis of PTSD according to the criteria of the DSM IV-TR is established * PTSD whose evolution is not chronic * Established PTSD : Symptoms presents for at least 1 month * PTSD consecutive to a unique traumatic event Controls : * The healthy controls will have sudden a traumatism of the same nature or the nature comparable to that of the patients suffering from PTSD, but they will not have developed pathology * Subjects having undergone a traumatism dating less than 3 months * Examples of traumatic events: aggression, accident of the public highway, the occupational accident Exclusion Criteria: * The PTSD consecutive to several traumatic events * Patients treated by a substance crossing the blood-brain barrier (with the exception of the antidepressants of the family of the ISRS which can be indicated in the treatment of PTSD) * Histories of epilepsy or significant loss of consciousness of any origin, including post-traumatic * Any psychiatric or somatic significant pathology * The psychiatric histories in particular of suicide attempt * The pregnant or breast-feeding women * Contraindications in the propanolol * Consumption of psychoactive drugs detected in urines * Excessive alcohol consumption * The persons not being capable of understanding or of reading the information describing the study * The patients refusing to sign the for…