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Located just posterior to the central sulcus, a fissure that runs down the side of the cerebral cortex, the primary somatosensory cortex comprises Brodmann’s areas 3a, 3b, 1, and 2. The primary somatosensory cortex receives projections from nuclei of the thalamus of the brain.
In neuroanatomy, the primary somatosensory cortex is located in the postcentral gyrus of the brain's parietal lobe, and is part of the somatosensory system. It was initially defined from surface stimulation studies of Wilder Penfield, and parallel surface potential studies of Bard, Woolsey, and Marshall.
The primary somatosensory cortex (S1) has a complex and organized anatomy and structure, crucial for its role in processing sensory information from the body: S1 is located in the postcentral gyrus of the parietal lobe, which lies directly posterior to the central sulcus.
The primary somatosensory cortex is located in a ridge of cortex called the postcentral gyrus, which is found in the parietal lobe. It is situated just posterior to the central sulcus, a prominent fissure that runs down the side of the cerebral cortex.
Postcentral gyrus: The postcentral gyrus is located in the parietal lobe of the human cortex and is the primary somatosensory region of the human brain. This is the point-for-point correspondence of an area of the body to a specific point on the central nervous system.
The postcentral gyrus forms the primary somatosensory cortex (Brodmann's areas 3,1,2). It is located on the parietal lobe, immediately posterior to the central sulcus and anterior to the postcentral sulcus.
The postcentral gyrus is the location of the primary somatosensory area, the area of the cortex dedicated to the processing of touch information. At this location there is a map of sensory space referred to as a sensory homunculus.
The primary somatosensory area in the human cortex is located in the postcentral gyrus of the parietal lobe. This is the main sensory receptive area for the sense of touch. Like other sensory areas, there is a map of sensory space called a homunculus at this location.
The primary somatosensory cortex (SI) of the brain is located just posterior to the central sulcus in the postcentral gyrus of the parietal lobe (Broadmann areas 3, 1, and 2).
The postcentral gyrus is in the parietal lobe and its cortex is the primary somatosensory cortex (Brodmann areas 3, 2 and 1) collectively referred to as S1. BA3 receives the densest projections from the thalamus. BA3a is involved with the sense of relative position of neighboring body parts and amount of effort being used during movement.