Fig. 9.

Phosphoramidon prolongs the responses of the buccal neurons to radula nerve stimulation. A, Simultaneous recordings from four neurons before, during, and after exposure to phosphoramidon (10 μm). In all cases the activity evoked is prolonged: trace 1, B neuron; trace2, A neuron; trace 3, B neuron; trace4, unidentified cell (see Results for details).B, Summary of five experiments (18 neurons) with phosphoramidon (10 or 100 μm). Prolongation of the responses evoked by radula nerve stimulation was observed in all the monitored neurons. The duration of the recruited activity was normalized to each respective control. The percentage average of every neuron in one experiment contributed to the average score of that experiment.