Topographical projections to the nucleus prethalamicus from the cerebellum, optic tectum, and telencephalon in holocentrid teleosts.

摘要

Fiber connections of the nucleus prethalamicus (PTh) were investigated by biocytin injections into the corpus cerebelli, optic tectum, and telencephalon in holocentrids. The present study revealed the corpus cerebelli projections to the plexiform layer of the contralateral PTh, optic tectum to the marginal and large cell layers of the ipsilateral PTh, and telencephalon to the small cell layer of the ipsilateral PTh. Large cells of the PTh project fibers back to the telencephalon. These observations suggest that projections of the corpus cerebelli, optic tectum, and telencephalon to the PTh are topographically organized.