The term retrorubral area of the midbrain reticular nucleus refers to a region of the rat brain caudal and dorsal to the ventral tegmental area. It is one of three parts of the midbrain reticular nucleus; the other two are the magnocellular part of the midbrain reticular nucleus and the parvicellular part of the midbrain reticular nucleus (Swanson-2004). BrainInfo distinguishes between the Retrorubral area of the midbrain reticular formation and the retrorubral nucleus. [ ]