Effects of intrathecal MK801-3, MK801-10, and MEM-30 following SNI.(a) Pretreatment with MK801-3 prevented the induction of punctate allodynia at day 1 after SNI surgery and MK801-10 prevented the induction of punctate allodynia at day 3 (two-way ANOVA with Bonferroni post hoc, vehicle vs. MK801-3, p = 0.0088; vehicle vs. MK801-10, p = 0.0096). MK801-3 exerted no effects on the induction of dynamic allodynia (two-way ANOVA with Bonferroni post hoc, p = 0.1583). MK801-10 prevented the induction of dynamic allodynia (two-way ANOVA with Bonferroni post hoc, p = 0.0057). Vehicle, n = 12; MK801-3, n = 14; MK801-10, n = 5. (b) Pretreatment with MEM-30 prevented the induction of punctate allodynia (two-way ANOVA with Bonferroni post hoc, vehicle vs. MEM-30, p = 0.0039) and dynamic allodynia (two-way ANOVA with Bonferroni post hoc, vehicle vs. MEM-30, p = 0.0001). Graphs represent the mean response ± SEM. *p < 0.05; **p < 0.01; ***p < 0.001, MEM-30 or MK801-3 vs. vehicle group. #p < 0.05; ###p < 0.001, MK801-10 versus vehicle group; &&p < 0.01, MK801-3 versus MK801-10 group. MEM: memantine.