Brain Byte

Rods and Cones

  • Published19 Feb 2020
  • Author Calli McMurray
  • Source BrainFacts/SfN

Light-sensing cells in the retina convert photons of light into electrical signals the brain can understand.

Brain Bytes showcase essential facts about neuroscience.

blue rods and cones
Design by A. Tong

Design by Adrienne Tong.

Image by Chris Guerin. CC BY-NC 4.0.



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