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Figure 6


Fig. 6. Effect of EO current density profile on electric images (fish model). (A) Normalized current densities versus normalized EO position. The green trace shows the 1-cycle sinusoidal current density; the blue trace shows the optimal skewed current density (sum of two Gaussian curves); the red trace shows the `impulse' current density (single Gaussian function offset in order to have a mean of zero). All current densities are zero-mean. (B) Normalized electric images produced by a metal disc located in the middle of the fish (black vertical line), 3 cm lateral from the midline (see inset), for skewed (blue), impulse (red) and sinusoidal (green) current density profiles. The green markers `xR', `x0' and `xC' illustrate the `x' or rostro-caudal positions of the three points that characterize bimodal electric images: the rostral peak, the zero-crossing (located between rostral and caudal peaks) and the caudal peak, respectively.





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