Figure 4.

Concentration-dependence of the kinetics of glutamate transporter and AMPA receptor currents in patches from Bergmann glial cells. (A) Currents evoked in an outside-out patch by 30 ms applications of l-glutamate at 250 μM, 500 μM, 1 mM and 10 mM. Cs₂SO₄-based internal solution. (B) Currents evoked in an outside-out patch in the presence of NBQX (10 μM) and GYKI (25 μM) by applications of l-glutamate at 10 μM, 100 μM, 1 mM and 10 mM. KSCN internal solution. Traces are averages of 15–50 responses. V_m = −90 mV.