Fig. 1.
a Levels of arc, bdnf, c-fos, egr-2, homer-1a, mkp-1, synapsin 1, and zif-268 mRNA after continuous administration of N2O (50%) for 1 h and a 1-h washout period. b arc, bdnf, and c-fos mRNA levels are similarly upregulated by 2-h continuous N2O (50%) and 1-h N2O (50%) followed by a 1-h washout period. c c-fos mRNA and p-MAPKT202/Y204 levels are increased after 30 min of N2O (50%) administration. Data are means ± S.E.M. *< 0.05, **< 0.01, ***< 0.001 (for statistical analyses and n numbers, see Table S2)