postcentral gyrus

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Related to Somatosensory area: somatic sensory system

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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Below, photomicrographs with variable magnifications illustrating anterogradely-labeled axons originating in S1 and terminating within the second somatosensory area (S2), the parietal-ventral area (PV), the parietal-rhinal area (PR), and the contralateral S1 (S1c).
Somatosensory areas have been added to the parietal cortex, and the posterior parietal cortex contains areas related to visual guidance of reaching and hand use.
Iriki, "Visual responsiveness of neurons in the secondary somatosensory area and its surrounding parietal operculum regions in awake macaque monkeys," Cerebral Cortex, vol.
Moreover, the comparison of networks of healthy and patient subjects produced at least one significantly stronger connection, between the right ventral premotor area and the left secondary somatosensory area, although it is unclear whether this can be attributed to plasticity or merely to SCI-induced disconnection sequelae.
Identification of Primary and Secondary Somatosensory Areas in Control Subjects.
Furthermore, the cessation of signals from the proprioceptive receptors below the lesion level in patients with SCI leads to absence of detection of these signals by the somatosensory areas placed in the anterior parietal cortex.