postcentral gyrus

(redirected from somatosensory cortex)
Also found in: Dictionary, Thesaurus, Encyclopedia.

gyrus

 [ji´rus] (pl. gy´ri) (L.)
one of the many convolutions of the surface of the cerebral hemispheres caused by infolding of the cortex, separated by fissures or sulci; called also cerebral gyrus.
angular gyrus one continuous anteriorly with the supramarginal gyrus.
annectent gyri various small folds on the cerebral surface that are too inconstant to bear specific names; called also gyri transitivi.
Broca's gyrus inferior frontal gyrus.
central gyrus, anterior precentral gyrus.
central gyrus, posterior postcentral gyrus.
cerebral gyrus gyrus.
Cerebral gyri. From Applegate, 1996.
cingulate gyrus (gyrus cin´guli) an arch-shaped convolution situated just above the corpus callosum.
frontal gyrus any of the three (inferior, middle, and superior) gyri of the frontal lobe.
fusiform gyrus one on the inferior surface of the hemisphere between the inferior temporal and parahippocampal gyri, consisting of a lateral (lateral occipitotemporal gyrus) and a medial (medial occipitotemporal gyrus) part.
hippocampal gyrus (gyrus hippocam´pi) one on the inferior surface of each cerebral hemisphere, lying between the hippocampal and collateral fissures; called also parahippocampal gyrus.
infracalcarine gyrus (lingual gyrus) one on the occipital lobe that forms the inferior lip of the calcerine sulcus and, together with the cuneus, the visual cortex.
marginal gyrus the middle frontal gyrus.
occipital gyrus any of the three (superior, middle, and inferior) gyri of the occipital lobe.
occipitotemporal gyrus, lateral the lateral portion of the fusiform gyrus.
occipitotemporal gyrus, medial the medial portion of the fusiform gyrus.
orbital gyri irregular gyri on the orbital surface of the frontal lobe.
parahippocampal gyrus hippocampal gyrus.
paraterminal gyrus a thin sheet of gray matter in front of and ventral to the genu of the corpus callosum.
postcentral gyrus the convolution of the frontal lobe immediately behind the central sulcus; the primary sensory area of the cerebral cortex; called also posterior central gyrus.
precentral gyrus the convolution of the frontal lobe immediately in front of the central sulcus; the primary motor area of the cerebral cortex; called also anterior central gyrus.
gyrus rec´tus a cerebral convolution on the orbital aspect of the frontal lobe.
supramarginal gyrus that part of the inferior parietal convolution which curves around the upper end of the fissure of Sylvius.
temporal gyrus any of the gyri of the temporal lobe, including inferior, middle, superior, and transverse temporal gyri; the more prominent of the latter (anterior transverse temporal gyrus) represents the cortical center for hearing.
gy´ri transiti´vi annectent gyri.
uncinate gyrus the uncus.

post·cen·tral gy·rus

[TA]
the anterior convolution of the parietal lobe, bounded in front by the central sulcus (fissure of Rolando) and posteriorly by the postcentral and interparietal sulci.

postcentral gyrus

[-sen′trəl]
Etymology: L, post, after; Gk, kentron, center, gyros, turn
a convolution of the brain immediately posterior to the central sulcus of the cerebrum. It is the location of the sensory strip for the contralateral side of the body.

post·cen·tral gy·rus

(pōst-sen'trăl jī'rŭs) [TA]
The anterior convolution of the parietal lobe, bounded in front by the central sulcus (fissure of Rolando) and posteriorly by the interparietal sulcus.
References in periodicals archive ?
Continuous theta-burst stimulation over primary somatosensory cortex modulates short-latency afferent inhibition.
The approach was even able to identify maps of missing (phantom) fingers in the somatosensory cortex of the TMSR patients that were activated through the reinnervated skin regions from the chest or residual limb.
The patient was a 68-year-old male who had a parietal damage involving the inferior parietal lobule and inferior parieto-temporal junction and extending to the somatosensory cortex.
The primary somatosensory cortex (S1) is subdivided into smaller regions and today neuroscientists know that area S1 is most responsive to somatosensory sensation that is discrete and segregated (Hoffken et al.
The topographical organization of the motor cortex largely mirrors that of the somatosensory cortex, with a larger representation for areas with fine movements, such as the hands and face.
43) used source localization to identify to the posterior wall of the central sulcus in area 3b of the somatosensory cortex as the site of N24 generation.
Digitalized images were taken in all cases in the cortical laminates III to V of the primary somatosensory cortex and in the CA1 area of the ipsilateral hippocampus (10X) and then subjected to study by densitometry with the Fiji-Image J program (v-1.
LOS ANGELES - The thickness and functional activation of primary somatosensory cortex mapping to the face differed according to the frequency of migraine in a small study presented at the meeting.
Brodmann area 5 receives extensive nerve projections from somatosensory cortex and the vestibular system, and Brodmann area 7, process visual nervous information, which are related to perception of objects placed in space.
Their topics include the role of the somatosensory cortex in pain processing, rehabilitation after stroke using brain-computer interfaces and neurostimulation, mechanism of epileptogenesis in the somatosensory cortex in rats with genetic absence epilepsy, thermo-nociceptive responses evoked by laser pulses in the primary somatosensory cortex, and the regulation of the critical period for whisker lesion-induced barrel structural plasticity in the mouse somatosensory cortex.
A huge body of data has demonstrated that conscious adults do not report pain when their somatosensory cortex is electrically or chemically stimulated.