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However, the exact relations between the elements that form its roof are still debated in the neuroanatomical literature; the inferior medullary velum, and the ventricle's median aperture in particular. In some atlases, the inferior medullary velum is placed in the midline, while in others, it is placed in the transverse plane. The median aperture is also displayed in different ways in midsagittal drawings: as a round perforation of a midline velum, as a foramen in an uncharacterized part of the ventricle, and as a gap between the nodule and the brainstem. This work aims to provide a comprehensive review of the different descriptions of the fourth ventricle, in order to gain a clearer understanding of the ventricular system's structure.<\/jats:p>","DOI":"10.1111\/joa.13885","type":"journal-article","created":{"date-parts":[[2023,5,12]],"date-time":"2023-05-12T10:29:41Z","timestamp":1683887381000},"page":"555-563","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["The debated neuroanatomy of the fourth ventricle"],"prefix":"10.1111","volume":"243","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7639-8401","authenticated-orcid":false,"given":"Ronen","family":"Spierer","sequence":"first","affiliation":[{"name":"Rappaport Faculty of Medicine Technion\u2010Israel Institute of Technology  Haifa 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