Target areas of presumed auditory projections from lateral and dorsolateral pontine nuclei to posterior cerebellar vermis in rat.

Small injections of the retrograde tracer horseradish peroxidase were made into lobules V through X in the posterior cerebellar vermis of the rat. Labeled cells were counted in the auditory subdivisions of the pontine nuclei, the lateral and dorsolateral pontine nuclei. The results suggest that, within the posterior vermis, lobules VI, VII, and VIII together receive over 90% of projections from the lateral and dorsolateral pontine nuclei.