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Fig. 4. Experiment 1A CTRNN network solving the constant speed path integration
task. BL/R, left/right beacon sensor;
CL/R, left/right compass sensor; RL/R,
left/right rotation motor neuron; NL/R, interneurons.
Arrows are directional weighted links; double-headed arrows indicate two links
running in opposite directions. Open circles are neurons involved in the
oscillations responsible for generating the various modes of behaviour seen in
this agent during its return journey (see
Fig. 5).