Top. Dynamic pathway from chemosensory neuron AQR positioned in the head to chemosensory neurons PHAL/R positioned in the tail. The AQR neuron is driven by periodic excitatory input and 11 neurons out of 302 that are most responsive to that input are shown. Middle. Voltage responses of the depicted neurons. Bottom. Circular plot of the synaptic and gap connectivity between the shown neurons. The blue, green, orange and red colors of the lines indicate a progressively higher number of connections. Connections contributing to pathway A→B→C are labeled as such. Note that AQR is not connected directly to any of the depicted tail sensory or motor neurons.