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Postcentral gyrus information


Postcentral gyrus
Postcentral gyrus of the human brain
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
SystemSomatosensory system
LocationParietal lobe
ArteryMiddle cerebral artery
FunctionPrimary somatosensory cortex
Identifiers
Latingyrus postcentralis
NeuroNames105
NeuroLex IDbirnlex_1070
TA98A14.1.09.128
TA25469
FMA61896
Anatomical terms of neuroanatomy
[edit on Wikidata]

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[citation needed].

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Postcentral gyrus

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Postcentral sulcus

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prominent grooves on the surface of the brain.) The postcentral sulcus divides the postcentral gyrus from the remainder of the parietal lobe. Lateral surface...

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Precentral gyrus

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cytoarchitecturally defined as Brodmann area 4. The precentral gyrus lies in front of the postcentral gyrus - mostly on the lateral (convex) side of each cerebral...

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Somatotopic arrangement

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body corresponds to a point on the primary somatosensory cortex (postcentral gyrus). This cortex is typically represented as a sensory homunculus which...

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Cortical homunculus

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divisions of the body. The primary sensory cortex is located in the postcentral gyrus, and handles signals coming from the thalamus. The thalamus itself...

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Homunculus

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medial and shoulders lateral on top of both the precentral and the postcentral gyrus (for both motor and sensory). The man's head is depicted upside down...

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Spinothalamic tract

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information is relayed upward to the somatosensory cortex of the postcentral gyrus. The spinothalamic tract consists of two adjacent pathways: anterior...

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Parietal lobe

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somatosensory cortex which is just posterior to the central sulcus in the postcentral gyrus, and the dorsal stream of the visual system. The major sensory inputs...

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Sensorimotor network

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brain network that primarily includes somatosensory (postcentral gyrus) and motor (precentral gyrus) regions and extends to the supplementary motor areas...

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Trigeminal nerve

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the parietal lobe. The representation of sensory information in the postcentral gyrus is organized somatotopically. Adjacent areas of the body are represented...

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Primary somatosensory cortex

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neuroanatomy, the primary somatosensory cortex is located in the postcentral gyrus of the brain's parietal lobe, and is part of the somatosensory system...

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Somatosensory system

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pressures that squish their shape causing an action potential. The postcentral gyrus includes the primary somatosensory cortex (Brodmann areas 3, 2 and...

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Superior parietal lobule

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bounded in front by the upper part of the postcentral sulcus, but is usually connected with the postcentral gyrus above the end of the sulcus. The superior...

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Ventral posterolateral nucleus

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the nucleus. These then project to the somatosensory cortex in the postcentral gyrus.[citation needed] There is uncertainty regarding the location of VMpo...

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Brodmann area 40

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It is bounded approximately by the intraparietal sulcus, the inferior postcentral sulcus, the posterior subcentral sulcus and the lateral sulcus. It is...

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Stereognosis

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association areas of the parietal, temporal, or occipital lobes, or the postcentral gyrus of either hemisphere. For other types of dementia, stereognosis does...

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Sensory cortex

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cortex (on the precentral gyrus of the posterior frontal lobe) from the primary somatosensory cortex (on the postcentral gyrus of the anterior parietal...

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Primary sensory areas

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The area includes gray matter along the central gyrus and its extension into the postcentral gyrus. Taste: The primary gustatory area consists of the...

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Internal capsule

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neurons passing from the posterolateral nucleus of thalamus to the postcentral gyrus (in an anteroposterior somatotropic arrangement) the fibers of optic...

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Area 1

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festival across Canada and the United States Brodmann area 1 or the "postcentral gyrus", part of the human brain East Cambridge, Cambridge, Massachusetts...

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AJ; Chen, R (2008). "Digit somatotopy within cortical areas of the postcentral gyrus in humans". Cereb Cortex. 18 (10): 2341–51. doi:10.1093/cercor/bhm257...

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