Figure 6.
DA treatment does not affect astrocytic voltage-gated potassium channels. Ai, Bi, Ci, Representative traces from astrocytes incubated in control- or DA (75 μm)-containing media showing Kir (inwardly-rectifying), Kdr (delayed-rectifier), and IA (A-type) K+ currents. Aii, Bii, Cii, Corresponding I–V plots illustrate mean amplitude ± SEM of currents for each voltage-gated conductance. Aiii, Biii, Ciii, Same as in Aii, Bii, Cii, but with currents normalized to maximal recorded current in each cell: Kir control (n = 9 cells), DA (n = 6 cells); Kdr control (n = 8 cells), DA (n = 6 cells); IA control (n = 7 cells), DA (n = 6 cells). The only significant difference is an interaction in Aii (see Results).