Parkinson's Disease (PD) is a neurodegenerative disorder that affects a considerable number of people all over the world. Symptoms are the results of the dopaminergic neurons death in the substantia nigra pars compacta and the dopamine lack leads to the classical parkinsonian movements such as tremor, irregular gait, paralysis and a low muscular strength. Actually the disease is associated also to other symptoms that are not specifically involved in the motor system and can precede the movements disorder. Non-motor features are: olfactory dysfunction, fatigue, pain, psychiatric and sleep disorders; they have an high impact on the quality of life. This study is focused on the analysis of the electroencephalogram signals (EEG) and the inertial signals, both of them collected during the night.