Fearing Parkinson’s Disease: Relationships Between Cognition and Emotion

There is a growing interest in elucidating the etiopathogenesis of different neurodegenerative processes, and this chapter particularly focuses on Parkinson’s disease (PD). PD is the second most common neurodegenerative disease affecting 2% of the population over 65 years old, a consequence of the vulnerability of dopaminergic neurons associated with age. It is characterized by well-known motor symptoms, whereas the presence of non-motor symptoms, such as cognitive dysfunctions and emotional disturbances, are still underestimated.