Fig. 2. Determining that the mid-sagittal image is correctly oriented. The
mid-sagittal image is shown at the bottom. The right of the figure is anterior
(the jaws of the animal) and left of the figure is posterior (the lumen of the
gut and the esophagus are visible and labelled; this convention for
positioning mid-sagittal images will be used throughout the paper). The
coronal image that was recorded 155 ms before this mid-sagittal image is shown
in the middle (right is anterior, left is posterior) and the axial image
recorded 155 ms after this mid-sagittal image is shown at the top (left is
dorsal, right is ventral). Note that the orthogonal images are both
symmetrical and centered around the midline, providing evidence that the
sagittal image is neither para-sagittal nor significantly rotated.
