Fig. 10. (A) LEOD amplitudes (LEOD_y) measured along the midline of the fish in the presence (orange line) or absence (black line) of a metal cube placed in front of the animals mouth at the same distance as in the other experiments (distance to skin, 0.25 cm). (B) Colour-coded voltage modulations plotted along the midline of a fish, from the tip of the Schnauzenorgan to the head. Modulations <1 (a decrease in voltage caused by the object) are drawn in dark blue and were found only at the Schnauzenorgan. The modulation caused by the object changes at the snout of the animal. At the nasal region, voltages are increased, which cause modulation values >1 (depicted in red).