Inclusion Criteria:  Patients between 18 and 65 years of age, Patient hospitalized for more than 72 hours (in intensive care or conventional sector) for a COVID-19 infection defined by a positive PCR (Polymerase Chain Reaction) test and/or typical aspect on thoracic scanner, Patient hospitalized between 01/10/2020 and 01/04/2021, Patient with suspected cognitive impairment (obtaining a pathologic QPC score) during the phone screening, Patient having received complete information on the organization of the research and having given written informed consent (or a third person, independent of the investigator and the sponsor, in case of inability to read or write), Patient affiliated with a social security plan or beneficiary of such a plan, Patient with a sufficient level of written French comprehension to complete the cognitive assessment.  Exclusion Criteria:  Inability to travel to perform the BNP or additional tests, Contraindication to perform brain MRI (pacemaker, etc.), Presence of chronic neurological diseases (multiple sclerosis, neurodegenerative disease, epilepsy) and/or major cognitive disorders (stroke, head trauma) pre-COVID-19, Presence of psychiatric disorder historys (bipolar or psychotic illness) pre-COVID-19, Patients with very extensive post-COVID-19 brain damage leading to impossibility to realise cognitive assessment, Persons covered by articles L. 1121-5, L. 1121-7 and L1121-8 of the Public Health Code.