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What (who) is gyrus postcentralis - definition
![Gray's]] FIG. 726 – Lateral surface of left [[cerebral hemisphere]], viewed from the side](https://commons.wikimedia.org/wiki/Special:FilePath/Gray726.png?width=200 "Gray's]] FIG. 726 – Lateral surface of left [[cerebral hemisphere]], viewed from the side")
![Gray's]] Fig. 727 – Medial surface of left cerebral hemisphere](https://commons.wikimedia.org/wiki/Special:FilePath/Gray727.svg?width=200 "Gray's]] Fig. 727 – Medial surface of left cerebral hemisphere")
Wikipedia
In neuroanatomy, the postcentral gyrus is a prominent gyrus in the lateral parietal lobe of the human brain. It is the location of the primary somatosensory cortex, the main sensory receptive area for the sense of touch. Like other sensory areas, there is a map of sensory space in this location, called the sensory homunculus.
The primary somatosensory cortex was initially defined from surface stimulation studies of Wilder Penfield, and parallel surface potential studies of Bard, Woolsey, and Marshall. Although initially defined to be roughly the same as Brodmann areas 3, 1 and 2, more recent work by Kaas has suggested that for homogeny with other sensory fields only area 3 should be referred to as "primary somatosensory cortex", as it receives the bulk of the thalamocortical projections from the sensory input fields.
