Parvocellular ganglion cells are also known as which type?

• A. Midget ganglion cells
• B. Giant ganglion cells
• C. Koniocellular cells
• D. Macular ganglion cells

Answer: (A)

Parvocellular ganglion cells are the small, high-resolution pathway of the retina. In primates these cells are the midget ganglion cells, named for their tiny cell bodies and very small receptive fields, especially in the central retina (the fovea). They feed the parvocellular layers of the LGN and carry fine detail and color information, notably red-green color contrast, with high spatial resolution. The other terms describe different pathways or are location-based, not the standard designation for this group: giant or parasol cells are associated with the magnocellular pathway and motion detection; koniocellular cells belong to a separate koniocellular pathway involved in blue-yellow signals; macular refers to a region of the retina rather than a distinct cell type.