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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 somesthetic cortex (sensory) pertains to the signals within the postcentral gyrus coming from the thalamus, and the primary motor cortex pertains to signals within the precentral gyrus coming from the premotor area of the frontal lobes.
The primary sensory cortex is where the brain first begins to process sensory information. For the primary visual cortex, this is where the brain begins to identify lines and edges,...
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.
The primary somatosensory cortex is found just behind the central sulcus. It receives sensory information from the ventral posterolateral nucleus (VPL) of the thalamus via the internal capsule and corona radiata.
The primary somatosensory cortex (S1) plays a critical role in processing afferent somatosensory input and contributes to the integration of sensory and motor signals necessary for skilled movement.
The primary somatosensory cortex is located in the postcentral gyrus, which is the area of the cerebral cortex lying immediately posterior to the central sulcus, a prominent fold in the surface of the brain.
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 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.
The parietal lobe plays a crucial role in processing and integrating sensory information. The anterior portion of the parietal lobe, called the primary somatosensory cortex, processes the somatic senses to interpret tactile and position sensations.