[P2–247]: VALIDATION OF AN EEG‐BASED PROGNOSTIC BIOMARKER FOR MCI PATIENTS. (1st July 2017) - Magnúsdóttir, Bergrún Tinna; Johannsson, Magnus; Jóhannesson, Gísli Hólmar; Snædal, Jón; Guðmundsson, Thorkell Elí; Johnsen, Kristinn