Fig. 6.
Temperature's effects on rate constants. A: phase plots as a function of temperature (rat Type I RGC). B and C: steady states of gating and time constants of the “Standard” rate constants for T >30°C (continuous curves) and “Alternate” rate constants for T <23°C (dashed curves) for Na- and K-channel gating, respectively. The steady-state fractions of open gates, m∞3(V), h∞(V), n∞4(V), are computed as: x∞(V) = αx(V)/[αx(V) + βx(V)], (x = m, h, n), and vary on the ordinate interval (0, 1). The dashed and solid curves of m∞3 and of n∞4 intersect at −61.09 and at −19.24 mV, respectively (see text for interpretation). Time constants are computed as: τx(V) = 1/[αx(V) + βx(V)], with ordinate scales specified for T = 35°C.