Fig. 8.

Ca²⁺ chelators fail to produce any significant effect on the hypoxic response.A₁, A₂, Pen recorder traces from two TC neurons recorded with electrodes containing EGTA (10 mm) (A₁) or BAPTA (30 mm) (A₂). The pen recorder speed was accelerated (time calibrations in brackets inA₂) during the hyperpolarizing voltage steps (from −65 to −85 mV) to visualize the changes in instantaneous and steady-state current elicited during hypoxia.B₁, B₂,I–V plots obtained from the two other TC neurons show the effect of hypoxia recorded with electrodes containing EGTA (10 mm) and BAPTA, respectively.