Fig 1. Photographing brain hemispheres.

Brain hemispheres were placed at the center of a non-refractile, transparent acrylic plate on a thin frame. A thin frame supported the acrylic plate, allowing photographs to be taken from various positions. Photographs were taken at horizontal intervals of 30 degrees on the horizontal plane (blue circle with shooting points). Photographs from above (yellow circle: -30 degrees and black circle: -60 degrees) and photographs from below (red circle: +30 degrees and green circle: +60 degrees) were taken similarly at horizontal intervals of 30 degrees. Camera directions are indicated by arrows (for the right half of the figure).