Fig. 6.

Incubation with m-3M3FBS and quercetin suppresses the odorant-evoked inward current in lobster ORNs in situ. (A) Current traces recorded from three different ORNs evoked by odorants before (black), and after incubation with 20 μmol l⁻¹ m-3M3FBS (light gray, left), 40 μmol l⁻¹ quercetin (light gray, middle) or both (cyan, right). The effects of the drugs were partially reversible on washout (dark gray). Holding potential, −70 mV. Electrode solution (mmol l⁻¹): KCl 180, NaCl 30, EGTA 1, CaCl₂ 0.1, glucose 696, MgATP 1, Hepes 10. (B) Bar plot of the mean peak inward current obtained in A. Recordings were digitally low-pass filtered at 1 kHz. Current and time scales are different in each case.