Cerebral cortex

Cerebral cortex:

The cortex has several primary sensory regions. Such areas comprise taste region, primary auditory cortex for processing auditory stimuli, visual cortex for perceiving visual images and regions for other cutaneous ambiance.

The cortical regions adjacent to the main sensory centers are termed as association areas. Such areas are included in the procedure of recognition. For illustration the sensory stimulus from the retina of the eye reaches the visual association region of the cortex. Here the visual information is compare with past experiences. Further this region has connections with other sections of the cortex that influence decisions. Therefore visual information is judged numerous times. This might be one of the reasons why two people who witness similar event can present somewhat distinct versions of what happened.

The primary motor region of the cortex controls a lot of voluntary movements, particularly the finer motor movements of hands. Muscle groups like facial muscles that have lots of motor units have bigger innervations. They are symbolized by a large region of the motor cortex.

Anterior to the primary motor region is the premotor region. It is the staging region in which motor functions are prearranged before they are initiated in the motor cortex. For illustration, when a person decides to lift a hand, the neurons of the premotor region are stimulated initially. This region determines the order and the degree to which the muscles should contract.

The prefrontal region gives motivation and foresight to plan and start movements. This region is fine developed only in primates and particularly in humans. Our emotional behavior and mood are controlled by this region.

 

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