Fig. 9.
Characteristics of the depolarizing effects of NMDA on current injection induced depolarization. Superimposition of traces from before (Pre), after (NMDA) and recovery (Rcv) from NMDA application. Similar protocol for that shown in Fig. 4 was employed. For illustration clarity, only parts of the traces are shown. On this neuron, NMDA clearly lowered AP threshold, as defined in Fig. 5, and increased relative depolarization slightly.