<p>Defining the problem<br>1. Introduction<br>N. S. Narayanan and Roger L. Albin<br>2. The epidemiology of cognitive function in Parkinson's disease<br>Caroline M Tanner and Meredith A. Bock<br>3. Neuropsychology of Parkinson’s disease<br>Steven Anderson and Cole Toovey<br>4. Cognitive dysfunction and neuropsychiatric aspects of Parkinson’s<br>disease<br>Laura Marsh and Gabriela Austgen</p> <p>Clinical characteristics<br>5. Cognition in Prodromal Parkinson’s disease<br>Inga Liepelt-Scarfone, Anja Ophey and Elke Kalbe<br>6. Real-life consequences of cognitive dysfunction in Parkinson’s disease<br>Ergun Y. Uc and Kevin Kay<br>7. Cognitive control and Parkinson’s disease<br>James F. Cavanagh, Sarah Pirio Richardson and Sephira Ryman<br>8. Speech dysfunction, cognition, and Parkinson’s disease<br>Jeremy Greenlee, Kris Tjaden, Andrea Rohl, Stephanie Gutierrez and Angela C. Roberts<br>Pathophysiology<br>9. Neuropathology and Cognition in Parkinson’s disease<br>David J. Irwin and David Coughlin<br>10. Genetics of cognitive dysfunction in Parkinson’s disease<br>Roy Alcalay and Adina Wise<br>11. Animal models of action control and cognitive dysfunction in Parkinson’s disease<br>Bernard Balleine<br>12. Neuroimaging approaches to cognition in Parkinson’s disease<br>Kathleen L. Poston, Leila Kouhsari and Christina Young</p> <p>Circuit mechanisms<br>13. Functional neuroanatomy of cognition in Parkinson’s disease<br>Nader Pouratian, Timothy J. Florence, Cody Wolfe and Koorosh Mirpour<br>14. Role of dopamine and clinical heterogeneity in cognitive dysfunction in Parkinson's disease'<br>Roshan Cools, Jorryt Tichelaar, Rick Helmich, Bas Bloem, Rianne Esselink, Katrijn Smulders and Monique Timmer<br>15. Cholinergic Systems, Attentional-Motor Integration, and Cognitive Control in Parkinson Disease<br>Roger L. Albin, Martin Sarter, Sygrid van der Zee, Teus van Laar, Cindy Lustig, Martijn Muller and Nicolaas I.L.J Bohnen<br>16. Cognition and serotonin in Parkinson’s disease<br>Philippe Huot, Sebastien Belliveau, Imane Frouni and Cynthia Kwan</p> <p>Towards therapies<br>17. Caring for patients with cognitive dysfunction, fluctuations and dementia caused by Parkinson’s Disease<br>Georgina Aldridge, Oday Halhouli and Qiang Zhang<br>18. Neuromodulation of cognition in Parkinson’s disease<br>N. S. Narayanan, Rachel Cole, Derrick Okine and Brooke Yeager<br>19. The way forward for cognition and Parkinson's disease<br>N. S. Narayanan and Roger L. Albin</p>