The basal vein is a vein in the brain. It is formed at the anterior perforated substance by the union of The basal vein is a vein in the brain. It is formed at the anterior perforated substance by the union of The basal vein passes backward around the cerebral peduncle, and ends in the great cerebral vein; it receives tributaries from the interpeduncular fossa, the inferior horn of the lateral ventricle, the hippocampal gyrus, and the mid-brain. This article incorporates text in the public domain from page 653 of the 20th edition of Gray's Anatomy (1918)