This article contains what appears to be fairly accurate and useful information however it contains no references to any studies which back up any of the information Can anyone provide references Basic research is preferable to review articles in my opinion because I have found that review articles fairly regularly cite sources that do not actually support the specific claim made in the review My current project involves the PVN so I may be able to provide a few in the future but I highly doubt that my set of knowledge is exhaustive 128 143 43 144