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Topic: Cerebral cortex


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In the News (Thu 18 Jul 19)

  
  Cerebral cortex - Wikipedia, the free encyclopedia
The cerebral cortex is a brain structure in vertebrates.
The surface of the cerebral cortex is folded in large mammals like humans, where more than two thirds of the cortical surface is buried in the grooves, called "sulci".
The senses of vision, audition and touch are served by the primary visual cortex, primary auditory cortex and primary somatosensory cortex.
en.wikipedia.org /wiki/Cerebral_cortex   (1605 words)

  
 cerebral cortex
Postnatal ontogeny of uridine kinase in the cerebellum, hypothalamus, and cerebral cortex of the rat.
Increase in thickness of cerebral cortex in response to environmental enrichment in Brattleboro rats deficient in vasopressin.
Ultrastructure of neurofibrillary tangles in the cerebral cortex of sheep.
www.arclab.org /node_pages/195.html   (8654 words)

  
 BRAIN AREAS SUPPORTING CEREBRAL CORTEX FUNCTION   (Site not responding. Last check: 2007-10-22)
Activity of the cerebral cortex is dependent upon both specific sensory input and nonspecific activating impulses from the brain stem.
Although the content of consciousness is associated with activity of the cerebral cortex, the reticular activating system is critical for the existence of the conscious state.
The caudate nucleus is an elongated extension of the putamen.
www.benbest.com /science/anatmind/anatmd7.html   (4149 words)

  
 BASIC CEREBRAL CORTEX FUNCTION OTHER THAN VISION   (Site not responding. Last check: 2007-10-22)
The primary olfactory cortex is also known as the pyriform (pear-shaped) cortex, corresponding to the anterior portion of the uncus of the parahippocampal gyrus of the temporal lobe.
A large portion of the internal capsule connects the cerebral cortex to the spinal cord and, hence, is known as the corticospinal tract.
The subdivision of the cerebral cortex into the frontal, temporal, parietal and occipital lobes is based on the names of the overlying bones in the skull.
www.benbest.com /science/anatmind/anatmd6.html   (5875 words)

  
 CEREBRAL CORTEX   (Site not responding. Last check: 2007-10-22)
The cerebral cortex is the outer surface of the
Figure 3-2d shows a cross section of the cerebral hemispheres with the cortex shown as the pink layer on their outer surface.
The human cerebral cortex is very deeply wrinkled, so it has a lot of grey matter, which has the large majority of all the neurons in the CNS.
www.indiana.edu /~p1013447/dictionary/cercrtx.htm   (327 words)

  
 biology - Cerebral cortex   (Site not responding. Last check: 2007-10-22)
In the "higher" animals (especially the higher mammals), the surface of the cerebral cortex becomes folded.
The cerebral cortex, made up of four lobes, is involved in many complex brain functions including memory, perceptual awareness, "thinking", language and consciousness.
The cortex is comprised of the motor areas and the association areas.
www.biologydaily.com /biology/Cerebral_cortex   (621 words)

  
 The Cerebral Cortex
Cortical origins are primarily from the parietal and frontal lobes, but there are projections with origins from all cerebral cortices, Motor control via extrapyramidal nuclei is via effects on brainstem (diencephalon, midbrain, pons, medulla), cerebellar and basal ganglia motor nuclei..
Somatosensory cortex is highly organized by input source---and the body regions capable of the greatest sensitivity occupy the greatest amount of somatosensory cortex.
The visual cortex of the occipital lobe is divided into layers which are involved in a "division of labor'..each receiving visual input and processing it somewhat differently, via projections to other cortical and subcortical regions.
www.newmanveterinary.com /CerebralCortex.html   (764 words)

  
 Cerebral cortex definition - Medical Dictionary definitions of popular medical terms
Cerebral cortex: A thin mantle of gray matter about the size of a formal dinner napkin covering the surface of each cerebral hemisphere.
The cerebral cortex is crumpled and folded, forming numerous convolutions (gyri) and crevices (sulci).
The cerebral cortex is responsible for the processes of thought, perception and memory and serves as the seat of advanced motor function, social abilities, language, and problem solving.
www.medterms.com /script/main/art.asp?articlekey=11490   (259 words)

  
 cerebral cortex   (Site not responding. Last check: 2007-10-22)
The cerebral cortex is the outer surface of the cerebral hemispheres.
The cerebral cortex is the layer of the brain often referred to as gray matter.
The cerebral cortex of the brain is divided into four distinct sections, or lobes.
www.drugs-seizure-cerebral-palsy.com /drugsseizure/1/cerebral-cortex.html   (602 words)

  
 Synaptic Media > Cerebral Cortex > Welcome
Cerebral Cortex is a framework written entirely in PEAR Coding Standard compatible, PHP 5 code.
Cerebral Cortex does not have any facilities for hooking modules into each other, each module is a seperate PEAR installer compatible package.
Cerebral Cortex was written by Davey Shafik of Synaptic Media.
crtx.org /index.php   (260 words)

  
 TCIY - 3.2 The Cerebral Cortex
This cortex area is a map of the body, and the map was determined by neurologists touching electrodes to different points on the cortex surface, and observing which muscles contracted.
The incoming tracts are spread across the motor cortex strip, and the axons of those tracts terminate in cortex layers 1, 2, 3, and 4.
This knowledge of the functional areas of the cortex did not come about from studying the actual structure of the cortex, but instead from two other methods: by electrically stimulating different points on the cortex and observing the results, and by observing individuals who have specific cortex damage.
www.johmann.net /book/ciy3-2.html   (1177 words)

  
 Mind Over Matter Teacher's Guide - Introduction and Background
It connects areas of the cerebral cortex that are involved in sensory perception and movement with other parts of the brain and spinal cord that also have a role in sensation and movement.
The cerebral cortex, which is divided into right and left hemispheres, encompasses about two-thirds of the brain mass and lies over and around most of the remaining structures of the brain.
The cerebral cortex can be divided into areas that each have a specific function (Figure 3).
www.nida.nih.gov /MOM/TG/momtg-introbg.html   (1824 words)

  
 Cerebral Cortex of the Cat   (Site not responding. Last check: 2007-10-22)
The cerebral cortex was exposed in one hemisphere and the animal was placed in a head-holder.
Response properties of distinct neuronal subsets in hindlimb sensorimotor cerebral cortex of the domestic cat.
Relative effects of pentobarbital and chloralose on the responsiveness of neurons in sensorimotor cerebral cortex of the domestic cat.
oto.wustl.edu /bbears/arnie/catcrtx.htm   (1360 words)

  
 The cerebral cortex
Of equal importance are the interconnections or inter-reactions between cortical areas, which have never been fully investigated due to a lack of technical means.
Much of the present knowledge on the activity of the cortex comes from neurosurgical procedures and pathologic cases (injuries to the brain, cerebrovascular accidents, and brain tumors).
Clinical experience and neurotherapeutic testing have indicated that psychiatric disorders (see Figure 5-13) are related to specific centers of activation in the cortex.
www.neurokinesiology.org /The_Cerebral_Cortex   (1113 words)

  
 Neuroscience for Kids - Brain Size
Parts of the cerebral cortex in the parietal lobe are involved with processing information related to touch.
This is because the amount of primary somatosensory cortex is directly related to the sensitivity of a body area and the density of receptors found in different parts of the body.
If you were "built" in proportion to the amount of cortex devoted to each part of your body, you would look a bit distorted: you would have a big head and hands and a small torso and tiny legs.
faculty.washington.edu /chudler/brainsize.html   (452 words)

  
 How precise is the connectivity in the cerebral cortex?
If there is a plan to which the connectivity in the cortex conforms, then the connectivity of each individual cortex should be similar to the connectivity of any other cortex.
In addition, many (probably most) of the connections in the cortex are short-distance, and we need to know about the precision of these too.
The connectivity outside the cortex is more ordered, but even here the connectivity is not replicated between individuals at the level of individual neurons.
human-brain.org /stochastic.html   (698 words)

  
 About Gender: The Cerebral Cortex.
In the last chapter, it was pointed out that the cerebral cortex is in two halves, connected by the corpus callosum.
In the visual cortex, different cells analyse the response according to orientation of the edge stimulus, its length and rate of change in luminance.
The cortex therefore seems to be composed of generally similar general purpose cells, with a subtle innate code which takes the form of guidelines, rather than rules.
www.gender.org.uk /about/07neur/75_cortx.htm   (2998 words)

  
 Brain Structures and Their Functions
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
The cerebral cortex is divided into four sections, called "lobes": the frontal lobe, parietal lobe, occipital lobe, and temporal lobe.
This is a six-layered structure of the cerebral cortex which is only found in mammals.
serendip.brynmawr.edu /bb/kinser/Structure1.html   (775 words)

  
 Cerebral Cortex
There can be a lot of discombobulation that almost all those with CP are learning disenabled, however this is not true.
When Cerebral Palsy will more often than not affect the bodily movements, there are some super dangerous cases of Spastic paralysis that can cause cerebral diability, more often than not the subjects mental capacity is above the average.
Because of the uncertainties that oftentimes surround the in advance diagnosis of c.P., it can be more often than not usual for a physician to assess a toddler very carefully in a particular care centre while it can be recognised.
www.cerebral-palsy-101.com /Cerebral_Cortex.html   (436 words)

  
 cerebral cortex. The New Dictionary of Cultural Literacy, Third Edition. 2002
The surface layer of gray tissue of the cerebrum, frequently called the gray matter.
The large size of the cerebral cortex in humans distinguishes them from other animals.
Specific parts of the cortex control specific functions, including sensation, voluntary muscle movement, thought, reasoning, and memory.
www.bartleby.com /59/22/cerebralcort.html   (140 words)

  
 THE CEREBRAL CODE by William H. Calvin (MIT Press 1996)
The “interoffice mail” circuits of the cerebral cortex are nicely suited for this job because they’re good copying machines, able to clone the firing pattern within a hundred-element hexagonal column.
Although the cerebral code is a true code, it surely isn’t going to be universal; I doubt that the spatiotemporal firing pattern I use for dog (transposed to a musical scale, it would be a short melody, perhaps with some chords) is the same one that you use.
Next comes a dose of the local neural circuits of cerebral cortex, as that is where the triangular arrays of synchronized neurons are predicted, that will be needed for both the coding and creative complexity aspects.
williamcalvin.com /bk9   (4390 words)

  
 Cerebral Cortex - Pixelated Dreams
I may have spent almost 2 years on getting Cerebral Cortex to a point where I was happy to release it; however I can't finish this herculean task on my own.
There has been very little suggestions to Cerebral Cortex (and to those who are in #crtx on Freenode, I thank you very much) and even less code input.
Furthermore, the Cerebral Cortex Channel has had a makeover, using the same design as the rest of the sites in the *.crtx.org domain.
pixelated-dreams.com /categories/14-Cerebral-Cortex   (1608 words)

  
 ScienceDaily: Gray Matters: New Clues Into How Neurons Process Information
Cerebral Cortex Cells May Pulse Electrical Rhythm Through The Brain (November 5, 1999) -- Like the steady synchronized blink of a string of holiday lights, certain types of nerve cells in the cerebral cortex communicate with each other through electrical connections, forming a new type of...
Baylor researchers found that neurons in the visual cortex, the part of the brain responsible for...
The two thalami are located in the center of the brain, one beneath each cerebral hemisphere and next to the third ventricle.
www.sciencedaily.com /releases/2004/06/040616064016.htm   (2339 words)

  
 Cerebral Cortex 0.4.0-dev Released! - Pixelated Dreams
I know some of you must have thought Cerebral Cortex was going to be vaporware, but I guess you were wrong.
After more than a year of development (though I spent long period during that time not working on it), I would like to announce the immediate availability of Cerebral Cortex 0.4.0-dev.
You can find the releases at the Cerebral Cortex PEAR Channel site.
pixelated-dreams.com /.../147-Cerebral-Cortex-0.4.0-dev-Released!.html   (431 words)

  
 cerebral cortex - OneLook Dictionary Search
Cerebral cortex : MedTerms.com Medical Dictionary [home, info]
Phrases that include cerebral cortex: layers of cerebral cortex, molecular layer of cerebral cortex, cerebral cortex r, external granular l.
of cerebral cortex, fusiform l of cerebral cortex, more...
www.onelook.com /?w=cerebral+cortex&ls=a   (249 words)

  
 Howstuffworks "How Your Brain Works"
The basic lower brain consists of the spinal cord, brainstem and diencephalon (the cerebellum and cortex are also present, but will be discussed in later sections).
One portion, called the substantia nigra, is involved in voluntary movements; when it does not function, you have the tremored movements of Parkinson's disease.
Thalamus - The thalamus relays incoming sensory pathways to appropriate areas of the cortex, determines which sensory information actually reaches consciousness and participates in motor-information exchange between the cerebellum, basal ganglia and cortex.
www.howstuffworks.com /brain5.htm   (335 words)

  
 Braingle: 'Cerebral Cortex' Mentalrobics Article
The cerebral cortex is the main part of the human brain.
When you see a picture of a brain, the outer layer that looks convoluted and bumpy is the cerebral cortex.
The cortex is made up of four lobes separated from front to back and left to right.
www.braingle.com /mind/index.php?id=329   (237 words)

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