Indian American-led research from the University of Iowa (UI) revealed that a few minutes of data recorded from a single electrode placed on top of the head would be sufficient to predict Parkinson's disease (PD). Dr Nandakumar Narayanan, an associate professor of neurology at the university, said, "Cognitive decline, including dementia, is a significant and underappreciated symptom of Parkinson’s disease. Around 30% of patients can have cognitive symptoms at the beginning of the disease, and up to 80% will have cognitive problems at some point in their disease."

Narayanan, an MD in Medicine and PhD in Neurology from Yale University added that there are very few treatments for cognitive aspects of Parkinson's disease while there are quite a few effective treatments for the motor symptoms of Parkinson's, including medical therapies and deep brain stimulation.