In the LGN- cortical diagram you can see the connections between the different LGN layers and the visual cortex. Note that some layers go to the right eye and the others go to the left. Also you can see in which layers of the cortex that the different LGN layer terminate. The solid rectangle is a portion of cubical section that is usually shown as the cortical cube model. This solid rectangle shows the notable features.
Ocular dominance is shown as the red and green areas.
The green area represents the right eye and the red area the left. On the right side of the rectangle you can see the columns and their respective orientation specificities. The yellow areas are called the blobs. The blobs are visually identified with a light microscope after the cortex is treated with a substance to enhance the cytochrome oxidaze of the cells. These blob areas are important for color vision processing.