Fig. 8. Comparison of Ca²⁺ currents of Kenyon cells and projection neurons. (A) The voltage-dependencies of Ca²⁺ currents are similar, but projection neurons (PN) show higher current amplitudes than Kenyon cells (KC). Values are means ± S.E.M. of the peak Ca²⁺ current amplitudes measured at the time point indicated by the arrows in Fig. 7A (numbers of observations are indicated) at the respective pulse potential (pulse protocol is given in Fig. 7). (B) Mean peak current amplitudes are higher in projection neurons than in Kenyon cells (P<0.001). (C) Ca²⁺ current densities (-pA/pF) do not differ significantly (NS). The cell capacitances were measured for each cell using the capacitance compensation of the patch amplifier. All values are means ± S.E.M.