What is the primary somatosensory bark?
The primary somatosensory cortex is an area of the brain where nerve signals are normally accepted from the sense of touch. It is generally found in the part of the brain called parietal lobe, in the structure called the post of Central Gyrus. Gyrus is a comb along the surface of the brain; There are usually several on the cortex or outer part of the brain that increase the surface area. The cortex is also in the back of the central sulk, the groove on the surface of the brain. Nervous stimuli from all parts of the body are accepted at specific places in the primary somatosensory cortex, while the body is represented by a type of map called Homunculus.
The body parts are mapped in the primary somatosensory crust, but areas that are most sensitive have the most receptors such as face and hands. Nerve cells called neurons are more abundant in areas representing sensitive parts of the body. The hull is usually associated with less neurons and legs than the face and hands in this part of the brain.
The three subcutch of the Brodmann region generally form the primary somatosensory bark. This area also usually contains four sub -maps, with nerve cell columns representing specific areas of the body. These cells can reorganize if, for example, amputated part of the body and neurons usually respond when they touch another area. The nervous entry into the somatosensory area in general comes from the structure deeper inside the brain called thalamus.
The primary somatosensory bark is not the only area that can receive the input from the senses. Another area called secondary somatosensory cortex is usually a place where nerve signals travel from the primary area. Nerve processing here is usually not so accurate because the cells are not so specific to the body parts. Information from both sections goes to Different Place called the bark of somatosensory association; Associations between different senses are often processed here. If this area is damaged, one can touch something, feel it but notAble to figure out what it is.
scientists first mapped the primary somatosensory crust in the 1950s. During the brain surgery, surgeons could stimulate parts of the brain and find out where the patient felt something. The location of different parts of the body and the proportion in which they are represented can be seen by direct stimulation of the brain and recording the neurological response.