Pitch black behind 3-D see-through electric cyan blue images of an elderly female, elderly male, young adult female, young adult male, interconnected neurons, and two sketched nerves; one with demyelinatation damage, the other healthy. The elders are so extremely close-cropped that only their lower faces are featured. The young adults have their noses, mouths, and

Pitch black behind 3-D see-through electric cyan blue images of an elderly female, elderly male, young adult female, young adult male, interconnected neurons, and two sketched nerves; one with demyelinatation damage, the other healthy. The elders are so extremely close-cropped that only their lower faces are featured. The young adults have their noses, mouths, and throats detailed in an orange tint that matches the side bar borders of the book, and their organs hint indications of disease associated with Dysarthria: atrophy shrunkes tongues with resultant empty mouth cavities, collapsed soft pallets, and widened nasal passage.