REVIEW ARTICLE FIG.1 Basic pr 1 兴 或 100 550 的 0 3 hrs 4 Time (h) ere are o red tode a strong inp of PIP lasting 2-3 bee、 rs pr susceptibletohehwmed Because the indu g tho the allosteric glycine (for example. .the app ctivate NMDAr adoxica ling tha the Mg? which NATURE·VOL361·7 JANUARY1993 0193 © 1993 NaturePublishingGroup