Fig. 4

Temporal dynamics of the neuropsychological test results for each time point of visits. The z-transformed mean values and the 2nd order polynomial interpolations are shown. AD−: Alzheimer negative, AD+: Alzheimer positive. B: baseline visit (recruitment), T1: follow-up visit (< 6 month), T2: follow-up visit (> 6 month). CDT = clock drawing test, BTf = block tapping forward, BTr = block tapping reverse, MT = mosaic test, FC = figure copying, dFrep = delayed figure reproduction