What are the functions of the a) somatosensory cortex, b) motor cortex, and c) association cortex areas?
What are the functions of the a) somatosensory cortex, b) motor cortex, and c) association cortex areas?
The cerebrum amounts to nearly 90 percent of brain's weight. The outer layer of cerebrum known as cerebral cortex is formed of gray matter constituted of nerve cell bodies. Due to its appearance as a result of prevalence of cell bodies that gives the cortex a brownish-gray color, the cortex is usually called as the gray matter.
The cerebral cortex is divided into 2 nearly symmetrical halves known as the cerebral hemispheres. The cerebral hemispheres in human beings, are turned over or folded into many ridges and grooves. The largest grooves or fissures in cerebral cortex is divided into 4 separate lobes, these are the frontal lobe, parietal lobe, temporal lobe and occipital lobe. Specific areas in these lobes are associated with sensory and motor functions.
Areas of the cortex that either control motor movements (motor cortex) or receive sensory information (sensory cortex), amounts to only 20 to 25 percent of the total region, the remaining region forms the association cortex.
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