Figure 4. The gating current time constants as a function of solution osmolarity.

Data obtained in glycerol (○), erythritol (•), glucose (□) and sucrose (▪) solutions are plotted. A, η/η₀ is plotted on a logarithmic scale as a function of solution osmolarity for the different non-electrolytes. The data are fitted with eqn (16). The p values obtained are listed in Table 2. B, the percentage change in t_g at +20 mV plotted as a function of Π. The same data as in Fig. 3A are plotted with s.d. values (vertical bars). The data were fitted with eqn (17) and then α_g and δ_g for the four different non-electrolytes were derived. C, δ_g plotted as a function of membrane potential. D, α_g plotted as a function of membrane potential.