Fig. 5.

Development of the dependence of postsynaptic currents on glutamatergic input. Ganglion cells were voltage clamped at the reversal potential for Cl⁻. Top (P8), The glutamate receptor antagonists did not block the periodic postsynaptic potentials. Bottom (P23), Top Trace, A recording from a representative ganglion cell shows the more complex older bursting pattern. MiddleTrace, This record is an example of the glutamate receptor antagonists completely eliminating all postsynaptic potentials. BottomTrace, The potentials returned within 8 min of washing out the antagonists.