Normalized electric potentials, on the sagittal plane, at the peaks of the rostro-caudal potential difference.

Each image corresponds to the instant when the head to tail EOD reaches the peaks of the waves V₁, V₂, V₃ and V₄. Black lines indicate the points where the potential is zero. Insets show the head to tail EOD, with red dots indicating the peaks of the 4 waves.