Temperature dependence of I_A conductance, activation rate, and inactivation rate.

<p>(A) Family of I_A currents at 7, 11, 15, 19, and 23°C elicited in response to depolarizing steps from −40 mV to +30 mV in 10 mV steps. (B) Pooled data for the temperature dependence of I_A peak conductance measured at +20 mV (<i>n</i> = 6). (C) Temperature dependence of I_A activation rates was measured as the reciprocal of the time to maximal current elicited at +20 mV (from the time of the depolarizing step). (D) Temperature dependence of I_A inactivation rates was measured as the reciprocal of the time to decay to half of the maximal current from the time of maximal current elicited at +20 mV.