Video diary of a science communicator – Maps in the brain

So here’s the second of my ‘Video diary  of a science communicator’ posts! I had far too much fun making the prop I use at the end… don’t judge me, I’m a nerd!

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As promised in the video, here’s a bit of info on the lateral geniculate nucleus. You can see the location of where it is located in the visual pathway in the diagram below:

Reproduction of lithograph plate from Gray's Anatomy

And below is a picture of the lateral geniculate nucleus where the layers are stained. Information from the left visual hemisphere goes into the right side of the brain. In this right lateral geniculate nucleus, inputs from the left eye go into layers 1, 4, and 6 and inputs from the right eye go into layers 2, 3, and 5.

On top of this cells, called magnocellular cells, are found in layers 1 and 2 and process information from rods. Layers 3, 4, 5 and 6 contain parvocellular cells which process information from “red” and “green” cones. Additional cells, koniocellular clls, are found between the layers and process informaiont from the “blue” cones.

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