hippocampus

Definitions

  • WordNet 3.6
    • n Hippocampus seahorses
    • n hippocampus a complex neural structure (shaped like a sea horse) consisting of grey matter and located on the floor of each lateral ventricle; intimately involved in motivation and emotion as part of the limbic system; has a central role in the formation of memories
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Webster's Revised Unabridged Dictionary
    • Hippocampus (Class. Myth) A fabulous monster, with the head and fore quarters of a horse joined to the tail of a dolphin or other fish (Hippocampus brevirostris), -- seen in Pompeian paintings, attached to the chariot of Neptune.
    • Hippocampus (Zoöl) A genus of lophobranch fishes of several species in which the head and neck have some resemblance to those of a horse; -- called also sea horse.
    • Hippocampus (Zoöl) A name applied to either of two ridges of white matter in each lateral ventricle of the brain. The larger is called hippocampus major or simply hippocampus. The smaller, hippocampus minor, is called also ergot and calcar.
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Century Dictionary and Cyclopedia
    • n hippocampus In mythology, a sea-horse with two fore feet and a body ending in the tail of a dolphin or other fish. The car of Neptune and those of other deities were drawn by such sea-horses. Representations of them are seen in Pompeian paintings, etc. Also hippocamp.
    • n hippocampus [capitalized] In zoology, the typical genus of seahorses of the family Hippocampidæ.
    • n hippocampus In anatomy, a raised curved trace or track on the floor of the lateral ventricle of the brain.
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Chambers's Twentieth Century Dictionary
    • n Hippocampus hip′o-kam-pus a genus of small fishes with head and neck somewhat like those of a horse, the sea-horse:
    • n Hippocampus hip′o-kam-pus (anat.) a raised curved trace on the floor of the lateral ventricle of the brain.
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Etymology

Webster's Revised Unabridged Dictionary
L., the sea horse, Gr. a hippocampus (in senses 1 and 2); "i`ppos horse + to bend
Chambers's Twentieth Century Dictionary
Gr. hippokamposhippos, a horse, kampos, a sea-monster.

Usage

In literature:

Its full name is hippocampus Pippitopitus.
"The Voyages of Doctor Dolittle" by Hugh Lofting
He used to be a merry and cheerful fellow, but since they named him 'hippocampus' he hasn't smiled once.
"The Sea Fairies" by L. Frank Baum
The little seahorse (Syngnathus hippocampus) is commonly found here.
"The History of Sumatra" by William Marsden
Under the head is the figure of a hippocampus.
"Museum of Antiquity" by L. W. Yaggy
THE HIPPOCAMPUS, OR SEA-HORSE.
"A Century of Emblems" by G. S. Cautley
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In news:

Older adults who say they've had a life-changing religious experience are more likely to have a greater decrease in size of the hippocampus, the part of the brain critical to learning and memory, new research finds.
HippoCampus is a source of free multimedia resources for middle school, high school, and college students.
In 2006, it was discovered that the hippocampus had been stolen from its case and replaced with a fake.
In the course of mapping the the world's reefs for Google Street View, divers found the teensy weensy Denise's pygmy seahorse (Hippocampus denise) in Australian waters for the first time, reports New Scientist (subscription).
"Even marginal vitamin C deficiency in the mother stunts the fetal hippocampus, the important memory center, by 10 to 15 percent, preventing the brain from optimal development," says Prof.
Think of it as outsourcing the worry portion of the hippocampus region of your brain to highly skilled worriers in Pakistan or Eastern Kentucky.
A newly discovered pattern of brain activity in the hippocampus matches up with depressed behavior in rats, suggesting that it may represent a marker for depression in mammalian brains.
If your hippocampus is on vacation, I'll remind you that two weeks ago the Pavilion 's inaugural weekend began with Elton John and ended with NAS and Damian Marley.
Group of matured Hippocampus whitei.
What did Professor Hippocampus say at his retirement party.
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In science:

Hippocampus is the area of your brain responsible for processing, storing and recalling new knowledge and information it has a major role in the memory system it’s in charge of sorting new information and sending it to other sections of your brain for storage.
Human Information Processing with the Personal Memex
The hippocampus then recalls information when it's needed.
Human Information Processing with the Personal Memex
The objective of this study was to see if there is any relation between the amygdale and the hippocampus during the retrieval of emotional memories.
Human Information Processing with the Personal Memex
Results from a functional magnetic resonance imaging study showed that activity in the dorsolateral prefrontal cortex and hippocampus during the initial stage of working memory maintenance was predictive of subsequent long term memory (LTM) performance.
Human Information Processing with the Personal Memex
Tuning functions of this form are often found in orientation-selective cells in visual cortex of mammals and in place cells in the hippocampus [28, 29, 30].
Dynamic State Estimation Based on Poisson Spike Trains: Towards a Theory of Optimal Encoding
Brief bursts of high-frequency stimulation produce two types of structural change in rat hippocampus. J.
Interplay between Network Topology and Dynamics in Neural Systems
Kawaguchi K., Hickey R. W., Rose M. E., Zhu L., Chen J. and Graham S. H. (2005) Cyclooxygenase-2 expression is induced in rat brain after kainate-induced seizures and promotes neuronal death in CA3 hippocampus.
Post-ischaemic treatment with the cyclooxygenase-2 inhibitor nimesulide reduces blood-brain barrier disruption and leukocyte infiltration following transient focal cerebral ischaemia in rats
León, Nimesulide limits kainate-induced oxidative damage in the rat hippocampus, Eur. J.
Wide therapeutic time window for nimesulide neuroprotection in a model of transient focal cerebral ischemia in the rat
Pharmacol. 268, 415-423. Candelario-Jalil, E., Ajamieh, H.H., Sam, S., Martínez, G., León, O.S., 2000. Nimesulide limits kainate-induced oxidative damage in the rat hippocampus.
Neuroprotective efficacy of nimesulide against hippocampal neuronal damage following transient forebrain ischemia
Delayed neuronal death in the gerbil hippocampus following ischemia.
Neuroprotective efficacy of nimesulide against hippocampal neuronal damage following transient forebrain ischemia
Oxidative damage in hippocampus was maximal at late stages after ischemia (48 to 96 h) coincident with a significant impairment in glutathione homeostasis.
Time course of oxidative damage in different brain regions following transient cerebral ischemia in gerbils
MnSOD increased in hippocampus at 24, 48 and 72 h after ischemia, coincident with the marked reduction in the activity of glutathione-related enzymes.
Time course of oxidative damage in different brain regions following transient cerebral ischemia in gerbils
Finally, the effects of ischemia and different reperfusion times on both MnSOD and Cu/ZnSOD activities in hippocampus, cortex and striatum are presented in Table 2.
Time course of oxidative damage in different brain regions following transient cerebral ischemia in gerbils
Pharmacol. 260, 191-200. 6. Candelario-Jalil, E., Ajamieh, H.H., Sam, S., Martínez, G., León, O.S., 2000. Nimesulide limits kainate-induced oxidative damage in the rat hippocampus.
Time course of oxidative damage in different brain regions following transient cerebral ischemia in gerbils
Lett. 80, 251-256. 19. Haba, K., Ogawa, N., Mizukawa, K., Mori, A., 1991. Time course of changes in lipid peroxidation, pre- and postsynaptic cholinergic indices, NMDA receptor binding and neuronal death in the gerbil hippocampus following transient ischemia.
Time course of oxidative damage in different brain regions following transient cerebral ischemia in gerbils
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