Postcentral gyrus

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Postcentral gyrus
Postcentral gyrus.png
Postcentral gyrus of the human brain
Ba1 2 3.png
Brodmann areas 3, 1 and 2 of human brain. Brodmann area 3 is in red, area 1 in green, and area 2 in yellow.
Details
Identifiers
Latin Gyrus postcentralis
NeuroNames hier-87
NeuroLex ID Postcentral gyrus
Dorlands
/Elsevier
g_13/12405446
TA A14.1.09.128
FMA 61896
Anatomical terms of 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.

Structure[edit]

The lateral postcentral gyrus is bounded by:

The postcentral gyrus includes Brodmann areas 1, 2, and 3. Brodmann area 1 occupies the apex of the postcentral gyrus.

See also[edit]

Additional images[edit]

External links[edit]