Schauf C L, Bullock J O
Biophys J. 1978 Sep;23(3):473-7. doi: 10.1016/S0006-3495(78)85463-0.
When Myxicola giant axons are internally dialyzed with Cs+ as the sole cation, the time-course of prepulse inactivation is selectively accelerated compared to its rate with K+ dialysis in the same axons. This decrease in tauph occurs without any change in the magnitude or time-course of INa during step depolarizations and results in tauph/taush ratios near unity over most of the potential range in Cs+ dialyzed axons.
当用 Cs⁺作为唯一阳离子对 Myxicola 巨轴突进行内部透析时,与在同一轴突中用 K⁺透析时相比,预脉冲失活的时间进程会选择性加快。在阶跃去极化期间,τph 的这种降低在 INa 的幅度或时间进程没有任何变化的情况下发生,并且在 Cs⁺透析的轴突的大部分电位范围内导致 τph/τsh 比值接近 1。