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Storyline: Article on how the brain uses electrical impulses to process information gathered by the eye.
Storyline: A diagram of sign language used by the deaf.
Storyline: After a series of murders are connected to paintings by the same artist, Detective Corella has his wife, who cannot speak, pose for the artist to see what she can discover.
Storyline: Definitions of various mental powers, such as telepathy, precognition, etc.
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