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Topic: Archicortex


  
  Archicortex - Psychology Wiki - a Wikia wiki
Archicortex - Psychology Wiki - a Wikia wiki
The archicortex is a portion of the cerebral cortex that, with the paleocortex, develops in association with the olfactory system, and which is phylogenetically older than the neocortex and lacks its layered structure.
Being part of the limbic system, it has functions related to emotions and formation of memory.
psychology.wikia.com /wiki/Archicortex   (468 words)

  
  Archicortex Information
The archicortex is a portion of the cerebral cortex that, with the paleocortex, develops in association with the olfactory system, and which is phylogenetically older than the neocortex and lacks its layered structure.
The embryonic archicortex corresponds to the cortex of the dentate gyrus and hippocampus in mature mammals.
Being part of the limbic system, it has functions related to emotions and formation of memory.
www.bookrags.com /wiki/Archicortex   (130 words)

  
  Archicortex - Health Encyclopedia
The archicortex is subdivisible into four major sectors: temporal, retrosplenial, supracallosal and subcallosal.
These data show that the reptilian archicortex is in many ways homologous to the mammalian hippocampus and fascia dentata, and also indicate that it undergoes significant remodeling during evolution.
The archicortex is the three pre-evolutionary layers of the hippocampus and limbic system and is the oldest division, while the paleocortex also consists of three layers and is connected with the olfactory cortex.
www.steadyhealth.com /encyclopedia/Archicortex   (117 words)

  
 Neuroscience For Kids - questions/answers 2
Archicortex is the oldest, paleocortex is more recent and neocortex is the most recent.
Another difference is the number of cortical layers found in these areas: neocortex has 6 layers; paleocortex and archicortex have only 3 layers.
Paleocortex is found on the inferior and medial aspects of the temporal lobe (rostral insular cortex, piriform cortex, primary olfactory cortex); archicortex is found in the hippocampus.
faculty.washington.edu /chudler/qa2.html   (2350 words)

  
 OK so I’m not really a cowboy. » 2006 » May   (Site not responding. Last check: 2007-11-07)
The limbic system is one of the phylogenetically oldest parts of the cerebral cortex; even the way it’s constructed at a cellular level is more primitive than the rest of the cortex (but more complex than lower structures).
The oldest part of the limbic system is called paleocortex or archicortex, while the newer parts are called allocortex.
Archicortex has 3 layers of neurons that interact with each other in a complex network.
www.indiancowboy.net /blog/?m=20060505   (1868 words)

  
 Histological maturation of astroglial cells in the archicortex of early malnourished rats -- Cordero et al. 16 (3): 187 ...   (Site not responding. Last check: 2007-11-07)
Histological maturation of astroglial cells in the archicortex of early malnourished rats -- Cordero et al.
Histological maturation of astroglial cells in the archicortex of early malnourished rats
The maturation of fibrous astrocytes was studied in the archicortex
www.pedresearch.org /cgi/content/abstract/16/3/187   (158 words)

  
 The Krasnow Institute: Abstracts   (Site not responding. Last check: 2007-11-07)
Most investigators in the field remain convinced that the structure is intimately involved in mnemonic function, however the evidence for this involvement remains weak and somewhat problematical.
Here we take a step back to look at this structure from the standpoint of brain evolution in thecontext of neuroanatomy and surmise that this three-layer archicortex's current function is a result of the rapid phylogenetic development of the six-layer neocortex in mammals.
We speculate that archicortex evolved a key neocortical indexing function subsequent to and in support of the complex columnar neuroanatomy of the cerebral cortex.
www.gmu.edu /departments/krasnow/abstracts_frames/abs97/olds9703.html   (159 words)

  
 Alzheimer's Disease Research: Diagnosis, Memory Loss, Heredity, Treatment, Medication
During the approximately 10 year course of the disease, neurons are lost in a progressive pattern that is relatively consistent among individuals.
One example of this is the progression of disease pathology found in both the neocortex and archicortex.
In these structures, the earliest problems can be found in superficial cortical layers (II-IV), whereas later the disease advances to involve the deeper cortical layers (V-VI).
alzheimersdisease.researchtoday.net   (1009 words)

  
 The Hippocampus
Although the hippocampus lies beneath the cerebral cortex it is not truly a subcortical structure in that it is really a cortical infolding itself, albeit much older and more primitive than the surrounding neocortex.
Hence, it is also referred to as archicortex, or paleocortex.
The internal structure of the hippocampus is the same throughout its length, and consists of an infolded convolution of the evolutionarily older and more simple (fewer cell layers), archicortex or allocortex.
homepages.nyu.edu /~eh597/seahorse.htm   (4302 words)

  
 HyperBrain Syllabus Chapter 14
The hippocampus is the phylogenetically ancient part of the cortex and is also referred to as archicortex.
Part of the hippocampus (fig 14e) is three-layered cortex (#4685), or archicortex.
Axons of pyramidal cells in archicortex and primarily in the subiculum collect on the surface of the hippocampus adjacent to the ventricle to form a layer of white matter called the alveus (#4679).
www-medlib.med.utah.edu /kw/hyperbrain/syllabus/syllabus14.html   (1503 words)

  
 Abacus and the Right Brain   (Site not responding. Last check: 2007-11-07)
The archicortex is more or less completed at the time of birth, but it of course can develop even further after birth.
What is important here is that the archicortex requires “to be loved” and is responsible for the cultivation of aesthetic sentiments.
A “master of life” is a person who has a cooperation of the archicortex and the neocortex throughout their lifetime.
www.syuzan.net /english/brain/brain.html   (3738 words)

  
 NFI søk: litteratur: Immunoreactivity for taurine identifies subsets of glia, GABAergic and non-GABAergic ...   (Site not responding. Last check: 2007-11-07)
NFI søk: litteratur: Immunoreactivity for taurine identifies subsets of glia, GABAergic and non-GABAergic neurons in the neo- and archicortex of the rat, cat and rhesus monkey: comparison with immunoreactivity for homocysteic acid.
Immunoreactivity for taurine identifies subsets of glia, GABAergic and non-GABAergic neurons in the neo- and archicortex of the rat, cat and rhesus monkey: comparison with immunoreactivity for homocysteic acid.
M.F. Kritzer, et al.: Immunoreactivity for taurine identifies subsets of glia, GABAergic and non-GABAergic neurons in the neo- and archicortex of the rat, cat and rhesus monkey: comparison with immunoreactivity for homocysteic acid.
www.nsd.uib.no /nfi/litteratur/?key=331939   (139 words)

  
 Amazon.com: archicortex   (Site not responding. Last check: 2007-11-07)
Comparative anatomy of the cerebral cortex of mammalians: Paleocortex, archicortex, and interstitial cortex (Research & Microfilm publications) by I. N Filimonov (Unknown Binding - Jan 1, 1947)
The anatomy of the brain of the bottlenose dolphin (Tursiops truncatus): Rhinic lobe (rhinencephalon), the archicortex (Brain research bulletin) by Myron S Jacobs (Unknown Binding - 1979)
Comparative anatomy of the cerebral cortex of mammalians;: Paleocortex, archicortex, and interstitial cortex (JPRS:) by I. N Filimonov (Unknown Binding - 1965)
www.amazon.com /s?ie=UTF8&keywords=archicortex&index=blended&page=1   (850 words)

  
 Chapter 11: The Cerebral Cortex
These more primitive areas are located in the medial temporal lobes and are involved with olfaction and survival functions such as visceral and emotional reactions.
In turn, the allocortex has two components: the paleocortex and archicortex.
The archicortex consists of the hippocampus, which is a three-layered cortex dealing with encoding declarative memory and spatial functions.
www.dartmouth.edu /~rswenson/NeuroSci/chapter_11.html   (2423 words)

  
 A Neural Network Model of Memory
The small model describes a region that might amount to a few square millimeters of archicortex (or other structure) and provides a biologically plausible account of associative memory.
This provides a model with a ratio of primary to secondary neurons comparable to that of primate archicortex.
Moreover, no parameters of the training and recall algorithms depend on network architecture, and the model seems both evolutionarily plausible and appropriate to a variety of neural structures.
www.bbsonline.org /documents/a/00/00/11/77/bbs00001177-00/Vogel_HigerFnct.htm   (10348 words)

  
 Cerebral atrophy in AIDS: a stereological study.
Stereological estimates of mean volumes, surface areas, and cortical thicknesses were obtained on formalin-fixed brains from 19 men with AIDS and 19 controls.
Volumes of neocortex, white matter, central brain nuclei, ventricles and archicortex were estimated using point counting and Cavalieri's unbiased principle for volume estimation.
In AIDS, the mean volume of neocortex was reduced by 11%, and that of the central brain nuclei by 18%.
www.aegis.com /aidsline/1993/oct/M93A0224.html   (333 words)

  
 Local Homogeneity of Cell Cycle Length in Developing Mouse Cortex -- Cai et al. 17 (6): 2079 -- Journal of Neuroscience
The present analysis is focused on the PVE of three different subdivisions of the E14 mouse cortex: the neocortex, archicortex,
GF was 0.82 in the neocortex, 0.82 in the archicortex, and 0.87
16.7% (±8.3%) in the archicortex, and 1.5% (±0.7%) in the periarchicortex.
www.jneurosci.org /cgi/content/full/17/6/2079   (6071 words)

  
 [No title]   (Site not responding. Last check: 2007-11-07)
The primitive, 3-cell-layered, olfactory processing area (paleopallium or paleocortex, p) becomes associated with an area called the archicortex (a), which receives the processed olfactory information, and produces approach/ avoidance responses: revulsion/fear or attraction/like.
This area also is linked to learning and memory based upon these "emotional" responses.
Specific neocortical areas for receiving somatic sensory, auditory and visual inputs develop.
www.mona.uwi.edu /fpas/courses/physiology/neurophysiology/CorticalDevelopment.htm   (197 words)

  
 wissenschaft-online > Lexikon der Neurowissenschaft > Archicortex   (Site not responding. Last check: 2007-11-07)
cortex = Rinde], primitiver Cortex, Archaeocortex, E archicortex, am medialen Rand des Neocortex liegender Teil der Großhirnrinde, der bei Säugetieren vom Hippocampus gebildet wird.
Der Archicortex weist weniger Schichten auf als der 6-schichtige Neocortex.
Stammesgeschichtlich geht der Archicortex aus dem Archipallium hervor und ist nur bei Reptilien, manchen Vögeln und Säugern ausgebildet.
www.wissenschaft-online.de /abo/lexikon/neuro/852   (83 words)

  
 Nsci 6111
The archicortex (as contrasted with the neocortex) is the phylogenetically old brain cortex which exists in primitive animal species as well as man and is associated with functions of the limbic system.
It is the three layered cortex of the hippocampus and associated areas of the "old brain."
The neo-cortex is the "covering" of the cerebral hemispheres which first appears in reptiles and increases in size up to man. It is differentiated from the archicortex, or old cortex, which covers the "old brain."
www.courses.ahc.umn.edu /medical-school/NeuroScience/6111/htm/gen_repeat/resources/vocab.html   (2790 words)

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