P3‐229: MODEL‐BASED QUANTIFICATION OF CHEMO‐REFLEX DYSREGULATION ALLOWS DIFFERENTIATION OF MCI PATIENTS FROM CONTROLS AND ACCOUNTS LARGELY FOR THE IMPAIRMENT OF VASOMOTOR REACTIVITY AT CEREBRAL ARTERIES. (1st July 2019) - Marmarelis, Vasilis; Shin, Dae; Tarumi, Takashi; Zhang, Rong