P2‐229: THE EFFECT OF CSF AMYLOID BETA CONCENTRATIONS ON MEMORY PERFORMANCE OF THE INDIVIDUALS WITH SUBJECTIVE COGNITIVE IMPAIRMENT. (1st July 2006) - Gurvit, Hakan I.; Buyukiscan, Ezgi Soncu; Yildirim, Elif; Samancı, Bedia; Tatlidede, Asli Demirtas; Tufekcioglu, Zeynep; Hanagasi, Hasmet A.; Alaylıoğlu, Merve; Ak, Duygu Gezen; Dursun, Erdinc; Bilgiç, Başar