Diagnostic and Prognostic Value of New Quick Tests of Action Slowing in Stroke and in Cognitive Neurodegenerative Disease

Inclusion Criteria: * Patients between 40 and 85 years old, * French native language, * Social Security affiliation. * University Memory Clinic for: Mild severity disorder (MMSE\> 19) or major severity disorder related to AD : Albert 2011 criteria ; McKhann 2011 * to MCL according to McKeith criteria * to FTLD according to Rascovsky 2011 criteria * BBD according to Armstrong's criteria * related to PSP according to Höglinger criteria Exclusion Criteria: * Mental retardation or guardianship * Previously diagnosed dementia * Other current or past brain condition * severe head trauma * epilepsy prior to stroke still requiring previous treatment * Parkinson disease, multiple sclerosis... * brain tumor or brain radiation therapy * Current or past schizophrenia or psychosis * Active or past psychiatric disorders requiring a stay\> 2 days in a specialized environment * Contra indication to MRI * Comorbidity with life expectancy \<1 year * Comorbidity affecting cognition in particular: * Alcohol (\> 3 glasses / day) or history of alcohol withdrawal syndrome * opiate or cocaine addiction or opiate withdrawal syndrome * renal failure (dialysis or creatinine clearance \<30) * hepatic failure (spontaneous INR\> 1.5 or PT \<60%) * respiratory failure requiring oxygen therapy * heart failure (orthopnea\> 2 pillows) * persistent vigilance disturbances (NIHSS1a score ≤1) * cancer with paraneoplastic syndrome * treatment with gold salts, D Penicillamine or other treatment with cognitive effect * Patient under guardianship or curators or private under public law * Pregnant and / or lactating wom