Parvocellular part

The parvocellular part of a nucleus in the brain (if the nucleus has a parvocellular part) is that part which contains small-bodied, punctate neuronal cells. This term distinguishes the area from a corresponding magnocellular part, which would contain larger-bodied cells. Parvocellular neurons are more phylogenetically recent than magnocellular neurons.

Optic system
The parvocellular neurons of the optic system project from the retinal ganglion cells to the Lateral geniculate nucleus. These optic parvocellular neurons are sensitive to color and more capable of discriminating fine details than their magnocellular counterparts; they have greater spatial resolution, but lower temporal resolution, than their magnocellular counterparts.