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

<p>Each image corresponds to the instant when the head to tail EOD reaches the peaks of the waves V<sub>1</sub>, V<sub>2</sub>, V<sub>3</sub> and V<sub>4</sub>. 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.</p>