What is Hippocampus?
:''For the small fish, go to [[seahorse]]'' {{Infobox Brain | Name = Hippocampus | Latin = Hippocampus | Image = Gray739-emphasizing-hippocampus.png | Caption = The hippocampus is located in the [[temporal lobe|medial temporal lobe]] of the [[brain]]. In this lateral view of the human brain, the frontal lobe is at the left, the occipital lobe at the right, and the temporal and parietal lobes have largely been removed to reveal the hippocampus underneath. | Image2 = 1511 The Limbic Lobe.jpg | Caption2 = Hippocampus (lowest pink bulb)<br />as part of the [[limbic system]] | Width = 200 | IsPartOf = [[Temporal lobe]] | Components = | Artery = | Vein = }} [[File:MRI Location Hippocampus up..png|thumb|alt=MRI coronal view of a hippocampus shown in red.|MRI coronal view of a hippocampus shown in red]] The '''hippocampus''' is part of the [[mammal]]ian [[brain]], and belongs to the [[limbic system]]. Humans and other mammals have two, one in each side of the brain. The hippocampus is under the [[cerebral cortex]].<ref>{{Cite web |url=http://neuroscience.uth.tmc.edu/s4/chapter05.html |title=Limbic System: Hippocampus (Section 4, Chapter 5) Neuroscience Online: An Electronic Textbook for the Neurosciences &#124; Department of Neurobiology and Anatomy - the University of Texas Medical School at Houston |access-date=2014-02-28 |archive-date=2015-11-14 |archive-url=https://web.archive.org/web/20151114224516/http://neuroscience.uth.tmc.edu/s4/chapter05.html |url-status=dead }}</ref> It is important in spatial [[memory]] and navigation, and helps turn [[short-term memory]] into [[long-term memory]]. The hippocampus is named after the ''[[seahorse]]'' because its shape is similar. In [[Alzheimer's disease]], the hippocampus is one of the first regions of the brain to suffer damage; memory loss and disorientation are included among the early symptoms. People with extensive, bilateral hippocampal damage may experience [[