NERVOUS SYSTEM SPECIAL SENSE
CEREBRUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Premotor area
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Primary motor area
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Primary somatosensory area
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Somatosensory association area
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Detailed explanation-1: -The primary somatosensory cortex is called S1. This area of the cerebral cortex receives sensory information from the somatic senses, plus proprioceptive senses and some visceral senses. It is located on the postcentral gyrus of the parietal lobe, as shown in Figure 4.3.
Detailed explanation-2: -The anterior part of the parietal lobe, namely the postcentral gyrus (PoG), is the purely somatosensory region of the parietal lobe where somatic representations of the various body parts are found.
Detailed explanation-3: -The somatic sensory cortex in humans, which is located in the parietal lobe, comprises four distinct regions, or fields, known as Brodmann’s areas 3a, 3b, 1, and 2. Although area 3b is generally known as the primary somatic sensory cortex (also called SI), all four areas are involved in processing tactile information.