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Figure 9


Fig. 9. In preparations with stronger ongoing pyloric activity, dopamine did not alter cycle frequency, but did cause changes within the pattern, notably a strong increase in activity in the VD neuron (mvn) and a decrease in activity in the LP neuron (large spike on lvn). Recordings of the pyloric pattern in (A) control saline, (B) in the presence of dopamine (10–4 mol l–1), and (C) in wash. Nerves: mvn, medial ventricular nerve (recording action potentials of the VD and IC neurons); dlvn, dorso-lateral ventricular nerve (recording action potentials of the PD neurons); lvn, lateral ventricular nerve (recording action potentials of the PD, LP and PY neurons).





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