Table 1. Injection conditions and number of Ca_v­2.3-competent and Ca­_v2.3-deficient mice in each group: Kainate (KA) was injected intraperitonically (15 mg/kg). Histidine (His, 1 mM) was injected intracerbroventricularly, without or in combination with ZnCl₂ (nominally 10 µM)