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A, current traces (bottom panel) evoked in NScis by depolarizing step potentials (top panel) in the presence of nifedipine (2 μm) and ω-conotoxin GIVA (2 μm). B, current to voltage plot for n= 4 recordings as in A. C, trace recorded from NStrans held at −80 mV during a 25 Hz, −40 mV amplitude and 20 ms duration pulse train delivered to NScis (upper protocol trace).
