Memory Inhibition and Delayed Onset Post-traumatic Stress Disorder in Older Subjects

Inclusion Criteria: \- Regarding the constitution of the group patient (TSPT-R): * Subjects 65 years of age or older * Clinical diagnosis of delayed-onset PTSD according to DSM-5 criteria after 65 years * The traumatic event must have taken place at the latest before 65 years * Affiliated person or beneficiary of a social security scheme. * Written consent before any examination required by research) Regarding the constitution of the control group: * Subjects 65 years of age or older * No diagnosis of PTSD (delayed or not) or history of PTSD (delayed or not) * Affiliated person or beneficiary of a social security scheme. * Written consent before any examination required by the research). Exclusion Criteria: * For both groups: * Acute or chronic cognitive impairment known * GRECO MMSE pathological score less than or equal to the pathological threshold weighted according to level of education and age, namely: * 22 if no diploma * 23 if certificate of study * 25 if patent * 26 if bin or more * Remove one point at each threshold if age\> 80 years * Sensory or motor disorder preventing the passing of different tests * Psychotic disorder * Mood disorder in decompensation (for depression, HAD-D score equal to or greater than 11) * Disorder of the use of a moderate or severe substance (except tobacco). * Patients under guardianship or curatorship.