SALLY BENSUSEN / SCIENCE PHOTO LIBRARY SALLY BENSUSEN / SCIENCE PHOTO LIBRARY
Brain vision processing. Conceptual artwork illustrating a theory of how the brain processes visual information from the eye. The eye is shown as a movie camera that projects an upside-down image of an object (here a car) onto film, with a projector later displaying this image for little men in the brain to see. The use of little men to explain a natural process is known as the homunculus concept. The problem is not solved, only shifted. It is still necessary to explain how the little men see. Research now looks at the brain processing of the nerve signals from the eye, trying to explain how an ordered image results and how the signals are interpreted.
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