Magnocellular red nucleus

The magnocellular red nucleus (RNm) is located in the rostral midbrain and is involved in motor coordination. Together with the parvocellular red nucleus, it makes up the red nucleus.2° (Spinomesencephalic tract → Superior colliculus of Midbrain tectum) The magnocellular red nucleus (RNm) is located in the rostral midbrain and is involved in motor coordination. Together with the parvocellular red nucleus, it makes up the red nucleus.