Evolution of the Posterior Tuberculum and Preglomerular Nuclear Complex.
Résumé
The posterior tuberculum is part of the ventral area of the caudal diencephalon, arising from the basal plate of the neural tube. It comprises a periventricular area that contains an important contingent of dopaminergic neurons implicated in sensori-motor control. In actinopterygians (ray-finned fishes) and chondrichthyans (cartilaginous fishes), but not in tetrapods (amphibians, reptiles, birds, and mammals), the posterior tuberculum also includes laterally lying, migrated nuclei, which relay sensory inputs to the telencephalon.