Figure 1

Effect of proctolin on dynamics of graded IPSPs of LP to PD synapse. Facilitation of the LP to PD inhibitory postsynaptic potentials (2^nd and 4^th trace) in proctolin is associated with the activation of a Ca-like inward current. The 2^nd trace is experimental data and 4^th trace is generated by our model. Currents in the LP neuron (3^rd trace) correspond to inward current (presumably Ca²⁺).