Fig. 7.

Families of I_h simulated in real time using the G-clamp dynamic clamp system with ḡ_h set to 1.5 nS and 20 kHz temporal resolution. A: I_h elicited by the same protocol used in Fig. 2 to measure the voltage dependence of steady-state activation (m_∞) from tail currents and the voltage dependence of activation kinetics (τ_activation). B: I_h elicited by the same protocol used in Fig. 3 to measure the voltage dependence of deactivation (τ_deactivation) and the reversal potential (E_rev) for I_h. As expected, the calculated currents replicated the form of physiological currents.