Fig. 2. Hyperpolarisation-induced current in a Cl^–-loaded muscle fibre. (A) Currents elicited by the hyperpolarising voltage commands shown in the inset. Note the pronounced tail currents after deactivating jumps to –60 mV. Small, short inward currents are miniature excitatory junctional currents. The recordings were performed after holding the fibre for 5 min at –50 mV with a holding current of –5 nA. The current electrode was filled with 3 mol l^–1 KCl. (B) Current clamp recordings subsequently performed from the same fibre; currents were injected according to the protocol shown in the inset.