postcentral gyrus


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Related to postcentral gyrus: precentral gyrus, Prefrontal cortex, parietal lobe

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 ?
Other studies indicated grey matter reductions in the left inferior parietal gyrus in schizophrenia and bilateral postcentral gyrus in chronic and first-episode schizophrenia compared to controls [69, 70].
Eight significant clusters were found with increased brain activation from pre- to post-training, compared with non-CRT patients [Table 2] and [Figure 2], (1) the left inferior frontal gyrus (1120 mm [sup]3, BA9); (2) the left medial frontal gyrus (512 mm [sup]3, BA32); (3) the right middle frontal gyrus (464 mm [sup]3, BA6); (4) the left precentral gyrus (416 mm [sup]3, BA6); (5) the right postcentral gyrus (416 mm [sup]3, BA2); (6) the left medial frontal gyrus (352 mm [sup]3, BA6); (7) the right sub-gyral (296 mm [sup]3, BA6); and (8) the left sub-gyral (216 mm [sup]3, BA6).
Five clusters were found with increased brain activation in CRT patients from pre- to post-training, compared with non-CRT patients [Table 3] and [Figure 3],[sup][15],[24],[25],[26],[27],[31] (1) the right middle frontal gyrus (568 mm [sup]3, BA6); (2) the right postcentral gyrus (552 mm [sup]3, BA2); (3) the left medial frontal gyrus (440 mm [sup]3, BA6); (4) the right inferior parietal lobule (280 mm [sup]3, BA40); (5) the left middle frontal gyrus (208 mm [sup]3, BA9).
They found that the 'small world' property of the brain network of patients with schizophrenia was abnormal: (a) compared to normal brains the characteristic path length and the clustering coefficient increased; (b) the nodes in some brain areas had decreased centrality and thinner cortices (especially the left parahippocampal gyrus, inferior temporal gyrus, angular gyrus, and right superior frontal gyrus, which are part of the default network); and (c) the nodes in other brain areas had increased centrality, including nodes in the primary cortex (bilateral precuneous, left precentral gyrus, postcentral gyrus, and right Heschl gyrus) and the paralymbic system (bilateral orbital frontal gyrus, temporal pole, right cingulate tract, and inferior parietal gyrus).
Reversed asymmetry was found for the postcentral gyrus.
A paired t -test showed that when compared with the baseline, the patients with PD who were analyzed during the 2 years follow-up presented with increased fALFF values in the right middle temporal gyrus (MTG) and right middle occipital gyrus (MOG) and with decreased fALFF values in the right cerebellum posterior lobe (CPL), right thalamus, left superior parietal lobule, left IPL, left precentral gyrus, and left postcentral gyrus ( P < 0.
4] Luo and colleagues [5] reported that patients with OCD had a greater volume of white matter in the right precentral gyrus, the right postcentral gyrus, the bilateral precuneus, and the left middle occipital gyrus than control subjects; they also had a smaller volume of white matter in the bilateral superior frontal gyrus, the left postcentral gyrus, the left parahippocampal gyrus/ corpus callosum, and the right inferior parietal lobule.