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Topic: Hippocampus

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In the News (Tue 18 Jun 19)

  The Hippocampus
Although the dentate gyrus is commonly included as part of the Hippocampus, it is cytoarchitectonically distinct from the hippocampus proper (the architecture, or structure of the cells is different; Amaral 1978; Bayer, 1985; Amaral and Witter, 1989; Witter, 1989).
Of course, the hippocampus still held preminance as the structure responsible for conscious learning, an idea was reinforced by the report of a stroke case, in which damage restricted to the CA1 subfield of the hippocampus, resulted in amnesia (Zola-Morgan, Squire, and Amaral, 1986; but see Horel, 1994).
Lesions upstream of the hippocampus such as the perforant path, the main entorhinal input to the hippocampus (Skelton and McNamara, 1992) and lesions to the medial septum, the other major input to the hippocampus (Hagan et al., 1988) also disrupt acquisition.
homepages.nyu.edu /~eh597/seahorse.htm   (4302 words)

 Hippocampus definition - Medical Dictionary definitions of popular medical terms
Functionally, the hippocampus is part of the olfactory cortex, that part of the cerebral cortex essential to the sense of smell.
Certain antidepressants (such as fluoxetine, or Prozac) influence the birth of new neurons in the hippocampus.
The hippocampus is so-called because its shape suggests that of a seahorse.
www.medterms.com /script/main/art.asp?articlekey=3757   (121 words)

 Hippocampus - Wikipedia, the free encyclopedia
The hippocampus is located in the medial temporal lobe of the brain.
In the anatomy of animals, the hippocampus is among the phylogenetically oldest parts of the brain.
The importance of the hippocampus in memory was brought to the attention of researchers by patient HM.
en.wikipedia.org /wiki/Hippocampus   (1920 words)

 hippocampus (hippocampal)   (Site not responding. Last check: 2007-10-16)
Age-related spatial cognitive impairment is correlated with increase of synaptotagmin 1 in dorsal hippocampus in SAMP8 mice.
Cholinergic enzymes in the cerebellum and the hippocampus of the senescent mouse.
A decreased survival of proliferated cells in the hippocampus is associated with a decline in spatial memory in aged rats.
www.arclab.org /node_pages/154.html   (8568 words)

 ADW: Hippocampus erectus: Information
Hippocampus erectus is found from Cape Cod (and rarely Nova Scotia), Canada to Argentina and into the Gulf of Mexico.
Hippocampus erectus is strictly marine in habitat, and is found in seaweed and on coral reefs at depths of.5 - 30 m.
Hippocampus erectus swims weakly, propelled largely by the rapid motion of its dorsal fin and pectoral fins.
animaldiversity.ummz.umich.edu /site/accounts/information/Hippocampus_erectus.html   (1084 words)

"Hippocampus" is Greek for "seahorse", and the "nose" of the seahorse is a structure called the fimbria, which is the beginning of the fornix.
The fornix is a bundle of fibers connecting the hippocampus with the septal nuclei and with the mammillary bodies of the hypothalamus.
Although rabies particularly affects the hippocampus, the hippocampus is currently regarded as an organ of learning rather than an organ of emotion.
www.benbest.com /science/anatmind/anatmd7.html   (4149 words)

 What is the Hippocampus?
The hippocampus, so named because its shape vaguely resembles that of a seahorse, is responsible for encoding long-term memories and helping with spatial navigation.
The hippocampus is known to be associated with the consolidation of episodic memories, which are memories of personally experienced events and their associated emotions.
The hippocampus is also known as one of the most highly structured and studied parts of the brain, which is why it was chosen for prosthetic emulation.
www.wisegeek.com /what-is-the-hippocampus.htm   (337 words)

 LONI: LONI Resource | Downloads | Protocols | Segmentation | Hippocampus & Amygdala   (Site not responding. Last check: 2007-10-16)
Images are first reoriented to the long axis of the hippocampus by selecting the most anterior and posterior limits of the hippocampus and reorienting the images such that the anterior and posterior limits of the hippocampus are in parallel along the long axis.
Following the identification of the crus of the fornix, the hippocampus is traced using the alveus as the superior boundary and the white matter of the parahippocampal gyrus as the inferior boundary.
The shape of the hippocampus in posterior sections is one of a ball of gray matter that comprises the head and a straight segment of gray matter that is the subiculum (B, C).
www.loni.ucla.edu /NCRR/Downloads/Protocols/Seg_Hippocampus.html   (574 words)

 Memory Loss & the Brain   (Site not responding. Last check: 2007-10-16)
The hippocampus is a brain structure which lies under the medial temporal lobe, one on each side of the brain.
The hippocampus is especially sensitive to global reductions in oxygen level in the body.
Thus, periods of oxygen deprivation (hypoxia) which are not fatal may nonetheless result in particular damage to the hippocampus.
www.memorylossonline.com /glossary/hippocampus.html   (334 words)

 The Hippocampus
The hippocampus is a horseshoe shaped region of the subcortical brain.
The hippocampus seems to be a major hub through which all new experiences must pass on their way to forming a new memory.
The hippocampus is sometimes removed in epilepsy surgery causing a loss of the ability to form new long term memories.
www.wayfinding.net /hippocam.htm   (1025 words)

 AATP Interactive: Artificial Hippocampus
The hippocampus is the most ordered and structured part of the brain, and one of the most studied.
Slices of rat hippocampus were stimulated with electrical signals, millions of times over, until they could be sure which electrical input produces a corresponding output.
The hippocampus has a similar structure in most mammals, says Deadwyler, so little will have to be changed to adapt the technology for people.
www.techpsych.net /archives/000134.html   (686 words)

 Hippocampus Summary
In the anatomy of animals, the hippocampus is among the phylogenetically oldest parts of the brain.
The main output pathways of the hippocampus are the cingulum bundle and the fimbria/fornix, which arise from field CA1 and the subiculum.
The importance of the hippocampus in memory was brought to the attention of researchers by patient HM.
www.bookrags.com /Hippocampus   (2272 words)

 :: The Hippocampus ::
Hippocampus is not a library, or a club, a work shop, or a community center - it is all that and more.
The great thing about Hippocampus is that you can learn a lot of cool stuff, like the thing I just told you about the mascot.
Hippocampus is a place that has been built especially for kids who want to have a great time doing different things.
www.thehippocampus.com   (474 words)

 Hippocampus Handout
The hippocampus (together with anatomically related structures) is essential for a specific kind of memory, here termed declarative memory (similar terms include explicit and relational).
The first suggestion that the hippocampus is involved in only one kind of memory was developed by Hirsh (1974) on the basis of studies of rodents with hippocampal lesions.
The cortical structures adjacent to the hippocampus (entorhinal, perirhinal, and parahippocampal cortex) appear to participate with the hippocampus in a common memory function.
cogsci.ucsd.edu /~pineda/guide/hippocampus_handout.html   (3854 words)

And this is common: Alzheimer's disease affects the hippocampus first and severely, before other parts of the cortex (later, the frontal lobes too).
But to find the hippocampus, we have to look farther up the temporal lobe, and Cindy's brainstem is in the way of our view.
The hippocampus can be injured by too little blood flow, Alzheimer's Disease -- and epilepsy, which has some striking similarities to bipolar disorder.
www.psycheducation.org /emotion/hippocampus.htm   (1339 words)

 Medical Dictionary: Hippocampus - WrongDiagnosis.com
Hippocampus: a complex neural structure (shaped like a sea horse) consisting of gray 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
Hippocampus : a layer of gray matter lying along the floor of the lateral ventricle of the brain, comprised of cholinergic and possibly glutamatergic fibers, believed to be the critical brain structure underlying learning and memory.
Hippocampus : A curved elevation of gray matter extending the entire length of the floor of the temporal horn of the lateral ventricle (Dorland, 28th ed).
www.wrongdiagnosis.com /medical/hippocampus.htm   (339 words)

The first water horse, or hippocampus, was a fabled sea animal from Greek mythology it is half-horse and half-fish, with the head and forequarters of a horse and the tail and hindquarters of a fish or dolphin.
Later depictions of the Hippocampus gave it a dorsal fin instead of a mane, fins instead of hooves, and, on rare occasions, wings.
And, of course The chariot of Poseidon was drawn by a hippocampus.
www.angelfire.com /pro/realm/Hippocampus.html   (172 words)

 Memory Loss & the Brain   (Site not responding. Last check: 2007-10-16)
The hippocampus, a brain area critical to forming new memories, is particularly vulnerable to the effects of the gas.
Three brain structures, the hippocampus, the cerebellum, and the basal ganglia, "seem to be more vulnerable than other parts of the brain," Hopkins explains.
The hippocampus, the region of the brain responsible for transferring new information to long-term memory, is most vulnerable because it sits deep in the middle of the temporal lobe, at the very end of the blood's circulation route.
www.memorylossonline.com /gasattack.htm   (1095 words)

 Hippocampus Hotel Greece, Hotel Accommodation Holidays Holiday Hotels Aegina Perdika Saronic Islands Greek Islands ...
The Hippocampus (which means seahorse) has 20 rooms, all with balcony that overlooks either the sea or the mountain.
The garden of hotel Hippocampus, is naturally shaded by grape vines, phoenix palms and a spectacular boukamvilia, the garden is the perfect spot to relax and enjoy breakfast or drinks during the summer months.
Attended by villagers and guests alike, this tradition has been upheld by the Lazarou family since the days long before Hotel Hippocampus, when the Lazarou family had their summer house here.  No one knows the exact age of the original church but in 1922, it was renovated and restored by Pavlos his grandparents.
www.hippocampus-hotel-greece.com   (673 words)

 hippocampus - Search Results - MSN Encarta
Scientific classification: Sea horses make up the genus Hippocampus in the family Syngnathidae.
The hippocampus is thought to be one of the most important brain structures involved in memory.
Researchers for the first time have shown that adult monkeys produce new brain cells in the hippocampus, a brain region associated with memory and learning, according to a study published in the Proceedings of the National Academy of Sciences on March 17, 1998.
encarta.msn.com /hippocampus.html   (161 words)

 [No title]
Hippocampus zebra commonly referred to as (yep, you guessed it) the Zebra Seahorse due the the highly distinctive color pattern.
Hippocampus zosterae is appropriately called the Dwarf Seahorse due to its considerably small size.
Hippocampus denise is currently the smallest of all described Hippocampus species recording a max size of 16.2mm with the tail stretched.
reefkeeping.com /issues/2004-11/hcs3/index.htm   (3913 words)

5) The degree of fibrillary gliosis in the stratum lacunosum of the hippocampus and in the prosubiculum was proportional to that of the entorhinal cortical degeneration.
Since lesions in the hippocampus were known to be closely related to dementia, it is considered that lesions found in the hippocampus constitute one of the morphologic bases of dementia in endemic cretinism.
This remodeling of the CTLE hippocampus may hold the key to the mechanisms of hyperexcitability of the granule cells in the hippocampus of this group, and consequently the generation of seizures.
www.indiana.edu /~pietsch/hippocampus-lesions.html   (14604 words)

 Neuroscience for Kids - In the News - Memory and the Hippocampus
Many experiments have shown that the hippocampus is "critical to learning and remembering relationships that characterize spatial layouts, items in the particular context in which they have been experienced, and other associative, sequential or logical relationships among experiences" (reference 1).
In other words, the hippocampus might be connecting the memory of your first day at school with information about the physical surroundings, the smells, and the sounds of that event.
One way to look at what the hippocampus does in regard to memory is to examine a person with a damaged hippocampus.
faculty.washington.edu /chudler/hippo.html   (562 words)

 Scientists show hippocampus's role in long term memory
The formation of new memories and the retrieval of older memories are both evidenced in the hippocampus region of the brain, according to recent research by NYU neuroscientists.
The role of the hippocampus in the formation of new memories has been well-documented, but the contribution of this structure to the representation and retrieval of long-term memories is less clear.
By demystifying the role of the hippocampus in both the acquisition and retrieval of everyday memories, this research forms the necessary first steps towards understanding and developing treatments for devastating memory-related diseases such as Alzheimer's Disease.
www.brightsurf.com /news/may_04/EDU_news_051304_e.php   (815 words)

 ScienceDaily: Heavy, Chronic Drinking Can Cause Significant Hippocampal Tissue Loss
"The hippocampus actually refers to two structures, the right hippocampus and the left hippocampus that are located in the right and left temporal lobes of the brain," explained Thomas P. Beresford, Department of Veterans Affairs physician, and professor of psychiatry at the University of Colorado Health Sciences Center.
Before this study, researchers had noticed that the volume of the hippocampus seemed to be smaller in people who frequently drank large amounts of alcohol for long periods of time." Beresford is also the corresponding author for the study.
Since the hippocampus is connected to many other parts of the brain, it is difficult to know all of the things that it does.
www.sciencedaily.com /releases/2006/10/061025085513.htm   (779 words)

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