Time constants of the decay (τ_decay) of pyrethroid-induced tail currents.

The decays of tail currents were fitted with single functions to determine time constants (Tau values). Values represent the mean ± standard errors. Statistical comparisons (one-way ANOVA followed by Dunnett's multiple comparison test) were made for time constants of the decays between the wild-type and the mutant channels at *P<0.05. N.D., not determined because the tail current tended to keep recovering to base line. Time constants of the decay (τdecay) of pyrethroid-induced tail currents.