Figure 6. Inactivation kinetics of LVA Ca²⁺ currents in P2 and P3 visual cortical neurones.

A and B (left), a transient LVA Ca²⁺ current in P2 (A) and P3 (B) deep layer neurones activated by depolarization to -60 mV from a prepulse potential of -95 mV. A and B (right), the current traces were fitted by computer simulation using the m²h equation with the inactivation time constants (τ_h) indicated. The residue (Res) current was obtained by subtraction of the simulated current from the LVA Ca²⁺ current (control).