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Fig. 10. Effect of object size and lateral distance on bimodal electric images. All
panels are the same as in Fig.
9 except that lateral distance is measured here with respect to
the object's edge. (A) Un-normalized and (C) normalized electric images
produced by three different-sized metal objects located half way along the
fish's body, with the object edges 2 cm away from the midline: 0.5 cm (blue),
1.1 cm (green) and 2 cm (red) radius (see inset). Red traces are the same as
in Fig. 9A,C since a lateral
edge distance of 2 cm for the 2 cm-radius object corresponds to a lateral
object center distance of 4 cm. (B) Peak-to-peak potentials of the electric
images found in A as a function of lateral distance away from the fish's
midline for the three different objects (object sizes same as in A; see
inset). (D) Delta found in either A or C, as a function of lateral distance
from the fish's midline for the three different objects; delta for the 1.1 cm
object is shown in A and C. Black broken lines in B and D show the distance (2
cm away from the fish's midline) at which the objects were located for the
images shown in A and C.
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