Mon Prof Augmenté
Upright Tree in the Brain
Age 17 · Psychology
Light enters the eye and forms an inverted image on the retina. Signals travel along the optic nerve to the visual cortex, which builds a stable, upright visual scene.
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In the picture
- Retina: the eye’s inner wall where the tree appears upside down.
- Optic nerve: the glowing bundle carrying signals from the eye toward the brain.
- Visual cortex: the lit rear brain patch where the tree appears upright.
- Lens: the clear curved front part that focuses incoming light.
Examples
- Seeing a friend’s face upright even though the image on your retina is inverted.
- Watching a moving bus stay right-side up as you turn your head.
Key takeaways
- The retina receives an inverted image.
- The visual cortex turns signals into an upright, stable scene.
Quiz: Upright Tree in the Brain (Age 17)
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Where does the image form upside down before the brain corrects it?
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What does the visual cortex do with the signals it receives?
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Which structure carries signals from the eye toward the brain?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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