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postcentral gyrus
(redirected from Primary somatosensory cortex)

   Also found in: Medical, Wikipedia 0.02 sec.
postcentral gyrus [pōst′sen·trəl ′jī·rəs]
(anatomy)
The cerebral convolution that lies immediately posterior to the central sulcus and extends from the longitudinal fissure above the posterior ramus of the lateral sulcus.


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Thalamocortical axons arising in the ventral posterolateral and ventral posteromedial nuclei project to the primary somatosensory cortex in the postcentral gyrus (Brodmann areas 3a, 3b, 1, and 2), to the secondary somatosensory cortex in the parietal operculum, and to the insula.
[1-3,12-15] As is evident from our data, the vestibular induced afferents did essentially modify the electrical activity of the primary somatosensory cortex, which would indicate that in some aspects the vestibular source is a type of somatosensory sensation.
Functional reorganization of primary somatosensory cortex in adult owl monkeys after behaviorally controlled tactile stimulation.
 
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