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Encyclopedia > Secondary somatosensory cortex
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Brodmann area 40, or BA40, is part of the parietal cortex in the human brain. BA40 is in the area of the supramarginal gyrus, which lies at the posterior end of the lateral fissure, in the inferior lateral part of the parietal lobe. Image File history File links Brodmann area 40 File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... The parietal lobe is a lobe in the brain. ... Jump to: navigation, search Location of the Cerebral cortex Slice of the Cerebral cortex, ca. ... Jump to: navigation, search The human brain is the center of the central nervous system in humans and the primary control center for the peripheral nervous system. ... Lateral sulcus The lateral sulcus (also called Sylvian fissure or lateral fissure) is one of the most prominent structures of the human brain. ...

Contents


The parietal operculum (PO)

Anatomy

This region, forming the superior bank of the sylvian fissure, as studied in the cat, contains the secondary somatosensory representation, 'S-II', and a second somatotopic representation (parietal ventral, or PV). Anatomically, primate S-II receives inputs from area 3 and area 1, and projects to PV and area 7. PV has projections to area 5 and premotor areas. Lateral sulcus The lateral sulcus (also called Sylvian fissure or lateral fissure) is one of the most prominent structures of the human brain. ... The postcentral gyrus is a prominent structure in the parietal lobe of the human brain and an important landmark. ... The postcentral gyrus is a prominent structure in the parietal lobe of the human brain and an important landmark. ... Categories: Stub | Cerebrum ... Brodmann area 5 is part of the parietal cortex in the human brain. ...


Function

Single cell recording in primates show neurons with larger receptive fields than primary somatosensory cortex, responding to bilateral tactile stimuli, and showing attentional modulation. In humans, PO is activated during somatosensory stimulation, texture discrimination tasks, and in motor tasks involving sensory feedback. It is also involved in tactile learning and memory, and may also perform co-ordinate transformations from the somatotopic to other spatial frames. The postcentral gyrus is a prominent structure in the parietal lobe of the human brain and an important landmark. ...


See also


  Results from FactBites:
 
BioMed Central | Full text | Response of SII cortex to ipsilateral, contralateral and bilateral flutter stimulation in ... (5259 words)
Optical intrinsic signal imaging was used to evaluate the response of primary somatosensory cortex (SI and SII in the same hemisphere) to 25 Hz sinusoidal vertical skin displacement stimulation ("skin flutter") applied contralaterally, ipsilaterally, and bilaterally to the central pads of the forepaws.
[10] described "interactions" in SII cortex (a response that was not the summation of the ipsilateral and contralateral response) to simultaneous bilateral stimuli.
For each subject, a 1.5 cm diameter opening was made in the skull overlying somatosensory cortex, a chamber was mounted to the skull over the opening with dental acrylic, and the dura overlying anterior parietal cortex was incised and removed.
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