Summary: This study aims to study, in patient with Parkinson's disease, mild to moderate stage (according to Movement Disorder Society Clinical Diagnostic Criteria for Parkinson's Disease, Postuma et al., 2015): * the evolution of oculomotricity markers over time. * the correlation between neurological evaluations (motor and non-motor scores), neuropsychological evaluations (cognitive disorders) and oculom...

Summary: The purpose of this study is to identify and distinguish two different types of Progressive Apraxia of Speech through clinical imaging and testing.

Summary: The study is designed to characterize the clinical, neuropsychological, polysomnographic, and neuroimaging findings among subjects with Alzheimer's disease, Lewy Body dementia, and Parkinsons' Disease.

Summary: The study aims to systematically document the course of REM sleep behavior disorder (RBD) and investigate possible clinical and imaging biomarkers for disease progression and conversion risk to Parkinson's disease (PD), dementia with Lewy bodies (DLB), and multiple system atrophy (MSA). The study will use artificial intelligence to analyze imaging and develop a reliable method to predict and strat...