REVIEW ARTICLE ests that for the first An npuoobe d fr fgghoursafncrtc ollowing the induction of LTP.(3) is dov amat and/o ch ipdPleletactvatinfactorasghs sensitivit (N)may be d AM av tO NMDA Noisdeiedioamaginneinareetioncaasc also blocks the h ry OT RNA .s.ps)in hipp But alth there has inin A ieaede nsiti labo own.na acetar further com uld ineract NO depend on th tory o he Amp ugh No component could h the r-mediat could catic o dev the a IDA An alt thes a degree that will.in part ness nge The to the p tion with presy the po cell.But ave see ntiated by ms.To nal is of induc increased and fus on of vesicles at release sites in the presynaptic NATURE·V0L361·7 JANUARY1993 1993 Nature Publishing Group© 1993 NaturePublishingGroup