Differential inhibition of resurgent currents by sodium channel modulators. Resurgent current amplitudes in the presence of DMSO, carbamazepine (CBZ), riluzole (RZ), or anandamide (AEA) for Nav1.7 WT (A), T1464I (B), and M1627K (C). *, p < 0.05 from DMSO by student's unpaired t test, n = 7 to 10 cells each condition. All recordings were done with the Navβ4 peptide in the intracellular solution.