PUPILLARY REWARD SENSITIVITY IS A MARKER OF APATHY IN PARKINSON'S DISEASE
Kinan Muhammed, Michael Ben Yehuda, Daniel Drew, Sanjay Manohar, Trevor Chong, George Tofaris, Marko Bogdanovic, Graham Lennox, Michele Hu, Masud Husain
Journal of Neurology, Neurosurgery & Psychiatry Dec 2016, 87 (12) e1; DOI: 10.1136/jnnp-2016-315106.23