… reward neurons form and store fear extinction memory *X. ZHANG 1 , J. KIM 2 , S. TONEGAWA 3 ; 1 Dept. of Brain and … of Neural Progenitor Cells as a Consequence of Down Syndrome *H. MEHARENA 1 , L.-H. TSAI 2 ; 1 MIT, Cambridge, … overcoming pharmacological tolerance in the treatment of fragile-X syndrome *P. K. MCCAMPHILL 1 , R. K. SENTER 1 , H. …