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Encyclopedia > Somatosensory cortex

The lateral postcentral gyrus is a prominent structure in the parietal lobe of the human brain and an important landmark. It is almost the same as Brodmann areas 3, 1 and 2. The parietal lobe is a lobe in the brain. ... In the anatomy of animals, the brain, or encephalon, is the supervisory center of the nervous system. ... A Brodmann area is a region in the brain cortex defined by its cytoarchitectonic characteristics. ...


Postcentral Gyrus

Postcentral gyrus of the human brain.
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Postcentral gyrus of the human brain.

The lateral postcentral gyrus is bounded by:

It is the location of primary somatosensory cortex, the main sensory receptive area for the sense of touch. Like other sensory areas, there is a map of sensory space called a homunculus in this location. For the primary somatosensory cortex, this is called the sensory homunculus. See a somewhat fanciful and highly schematic representation of the sensory homunculus at lower right. The medial longitudinal fissure is the deep groove which separates the two hemispheres of the vertebrate brain. ... In human and zoological anatomy (sometimes called zootomy), several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... Central sulcus of the human brain. ... In human and zoological anatomy (sometimes called zootomy), several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... Postcentral sulcus of the human brain. ... In human and zoological anatomy (sometimes called zootomy), several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... Lateral sulcus The lateral sulcus (also called Sylvian fissure or lateral fissure) is one of the most prominent structures of the human brain. ... In human and zoological anatomy (sometimes called zootomy), several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... The primary sensory areas are the main cerebral areas that receive sensory information from thalamic nerve projections. ... Hartsoekers homunculus The concept of a homunculus (Latin for little man, sometimes spelled homonculus) is often used to illustrate the functioning of a system. ... The primary sensory areas are the main cerebral areas that receive sensory information from thalamic nerve projections. ...


Brodmann Areas 3, 1 and 2

Brodmann areas 3, 1 and 2 of human brain. Brodmann area 3 is in red, area 1 in green, and area 2 in yellow.
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Brodmann areas 3, 1 and 2 of human brain. Brodmann area 3 is in red, area 1 in green, and area 2 in yellow.

Brodmann areas 3, 1 and 2 comprise the primary somatosensory cortex of the human brain. Because Brodmann sliced the brain somewhat obliquely, he encountered area 1 first; however, from rostral to caudal the Brodmann designations are 3, 1 and 2, respectively. The somatosensory system is the sensory system of somatic sensation. ... The outermost layer of the brain, the cortex is rich in neurons and is the site of most sophisticated neural processing (See also: cerebral cortex). ... In the anatomy of animals, the brain, or encephalon, is the supervisory center of the nervous system. ... Korbinian Brodmann (November 17, 1868 - August 22, 1918) was a German neurologist who became famous for his definition of the cerebral cortex into 52 distinct regions from their cytoarchitectonic (histological) characteristics. ... In the anatomy of animals, the brain, or encephalon, is the supervisory center of the nervous system. ... In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... A Brodmann area is a region in the brain cortex defined by its cytoarchitectonic characteristics. ...

Sensory homunculus of the human brain.
Sensory homunculus of the human brain.

This area of cortex, as shown by Wilder Penfield and others, has the pattern of a homunculus. That is, the legs and trunk fold over the midline; the arms and hands are along the middle of the area shown here; and the face is near the bottom of the figure. While it is not well-shown here, the lips and hands are enlarged on a proper homunculus, since a large number of neurons in the cerebral cortex are devoted to processing information from these areas. Image File history File links Sensory homunculus in the human brain. ... Image File history File links Sensory homunculus in the human brain. ... Wilder Graves Penfield (January 25/26, 1891 - April 5, 1976) was a American-born Canadian neurosurgeon. ... Hartsoekers homunculus The concept of a homunculus (Latin for little man, sometimes spelled homonculus) is often used to illustrate the functioning of a system. ... Neurons (also spelled neurones or called nerve cells) are the primary cells of the nervous system. ... Cerebral cortex - Wikipedia, the free encyclopedia /**/ @import /skins-1. ...


These areas contain cells that project to the secondary somatosensory cortex.


See also


  Results from FactBites:
 
Somatosensory system - Wikipedia, the free encyclopedia (192 words)
The primary somatosensory area in the human cortex is located in the postcentral gyrus.
Areas of this part of the human brain map to certain areas of the body, dependant on the amount or importance of somatosensory input from that area.
For example, there is a large area of cortex devoted to sensation in the hands, while the back has a much smaller area.
  More results at FactBites »

 
 

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