Theoretical Analysis of Pre-Receptor Image Conditioning in Weakly Electric Fish
Figure 3
The Effect of Internal Conductivity on the Image Generation of a Dipole
(A) Electric image of a dipole placed at 0.5 mm from a “transparent” fish seen from a scorci view; the modelled dipole axis is perpendicular to the longitudinal axis of the fish.
(B) Same scene as (A) for fish with realistic internal conductivity.
(C) Electric image (transcutaneous current density) along the intersection of the skin with the sagittal plane (left), and the coronal plane (right), for the same dipole as in (A) and (B). Red traces show the images on a transparent fish, while blue traces correspond to a fish with realistic internal conductivity. Note that the ordinate for the realistic fish (left) is twice that for the transparent fish (right).