Figure 2.

The semi-intact preparation used to monitor the effects of conditioning on N3t activity. The preparation includes the whole CNS and the chemosensory sensory structures involved in the feeding response (lips and esophagus). The B3 is located in the buccal ganglia (BG) and other parts of feeding circuitry are located in the cerebral ganglia (CG). The monosynaptic EPSP inputs of N3t on the B3 motoneurons were monitored at 3 h before and after conditioning. A reduction in the frequency of the post-synaptic input can be observed after conditioning.