On which side of the LGN do the Parvocellular pathways synapse?

The parvocellular pathways, also known as the P pathways, are primarily involved in processing color and fine detail. In the lateral geniculate nucleus (LGN) of the thalamus, the parvocellular cells are organized in the ventral layers. These layers (typically layers 3 to 6) receive inputs primarily from the cones of the retina, which are responsible for high acuity vision and color discrimination.

In this context, the correct choice reflects the anatomical organization of the LGN, where the parvocellular pathways specifically synapse in the ventral layers. This arrangement allows the parvocellular information to be relayed to the visual cortex, where further processing occurs. Understanding this organization is fundamental in the broader context of how visual information is processed in the brain and the distinct functional roles of the different pathways.