Talk:Vampire/@comment-76.188.9.63-20121027122524/@comment-67.158.154.203-20121104160023

No. Jasper phisically affects someones emotions by controling their hormones, and electrical impulses in the brain. Bella got sleepy most likely because jasper increased the melatonin levels in her brain. It could be assumed that vampires have no hormones because they would have no way to transport them ( lack of circulatory system). However, jasper can make a lethargic crowd excited, and vise versa regardless of if it is human or vampire. It can be assumed that jasper soley controls electrical impulses in vampires, but it would be impossible to make one tired.