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. 2003 Jun;121(6):541–550. doi: 10.1085/jgp.200308833

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Copyright © 2003, The Rockefeller University Press

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Figure 5. — Amplitude of potentiated tail current as a function of repolarization (V_rep) and the dependence of potentiated tail current amplitude on the prior test potential (V_test). (A) Depolarization-induced increase of tail current amplitude as a function of V_rep (ranging from −50 to 50 mV) using the general protocol described in Fig. 4 in the absence (closed symbols, n = 10) and presence (open symbols, n = 8) of 10 μM (−)BayK 8644. The voltage-dependent increase in tail current amplitude (ΔI) at each V_rep was determined by subtracting the amplitude measured following the V_test to 50 mV from that measured after the V_test to 100 mV (see inset). (B) Tail current amplitude measured 20 ms after repolarization to −50 mV was measured as a function of V_test (inset) in the presence of 10 μM (−)BayK 8644 (n = 6).