Dual recording from an EPSC-bursting cell in whole-cell voltage clamp mode (red traces) and a spike-bursting cell in cell-attached mode (blue traces). Pane A shows 10 superimposed spontaneous burst-triggered traces. The thick line is the average of 135 similar traces. Panel B shows an example of a burst of EPSCs evoked by a burst of spikes that was itself produced by an extracellular injection of a positive current pulse (700 pA). Panel C shows superimposed 5 traces of similarly evoked bursts of EPSCs in control, CNQX (10 µM) and after washout. Note that CNQX reversibly abolished both the spontaneous and evoked EPSCs.