Fig. 7. Comparative signal development for two morphologies. The insets depict the scenario and corresponding model in each case, including reference ampullae orientations. (A,B) Voltage changes (V) in ampullae for models and ß, respectively, as they move north at 0.5 ms^-1 through a point located 50 cm west and 15 cm south of the prey dipole. The dipole (shown as an arrow) is oriented at 10° east of north. (C,D) Voltage changes in ampullae for models and ß, respectively, as they move north at 0.5 ms^-1 through a point located 20 cm south of a prey dipole. The dipole is oriented at 45° east of north.