Cortical projections of the nucleus centralis superior and the adjacent reticular tegmentum in the mouse

After horseradish peroxidase-injections into different cortical areas of the mouse, labeled neurons were observed in the n. centralis superior and in the bilateral adjacent reticular tegmentum, especially in the zone dorsal to the medial lemniscus and the n. reticularis tegmenti pontis. Labeled cells in the n. centralis superior were nearly always concurrent with labeled paramedian cells, the topographical distribution of which was independent of the site of injection.