Biology › Section N · Nervous and sensory systems › Topic N.7
Vision
Your eyes turn a stream of light into a detailed, coloured, moving picture, and they do it in a surprising way: photoreceptors signal light by switching themselves down, not up. Follow light from the cornea to the visual cortex.
In this topic
- Light as a stimulus
- The path of light through the eye
- Focusing near and far
- Worked example: sorting out three blurry views
- Rods and cones
- Transduction: switching off in the light
- Worked example: tracing a flash of light
- Seeing in colour
- Processing starts in the retina
- From eye to brain
- Common mistakes to avoid
- Key takeaways
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