angular gyrus


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Related to angular gyrus: Wernicke's area

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.

an·gu·lar gy·rus

[TA]
a folded convolution in the inferior parietal lobule formed by the union of the posterior ends of the superior and middle temporal gyri; a gyrus located around the caudal terminus of the superior temporal sulcus.

angular gyrus

n.
A region of the inferior parietal lobe of the brain that is involved in the processing of auditory and visual input and in the comprehension of language.

angular gyrus

A region of the inferior parietal lobe near the superior edge of the temporal lobe, and just posterior to the supramarginal gyrus; it is involved in a number of processes related to language and cognition (Brodmann area 39), which links visual input with stored sounds of language.

angular gyrus

Neurophysiology A region of the parietal lobe which links visual input with the stored sounds of language. See Dyslexia.

an·gu·lar gy·rus

(ang'gyŭ-lăr jī'rŭs) [TA]
A folded convolution in the inferior parietal lobule formed by the union of the posterior ends of the superior and middle temporal gyri.
References in periodicals archive ?
These alterations may be associated with prominent symptoms in OCD, such as difficulties with inhibitory control (pallidum, angular gyrus), executive functioning (middle frontal gyrus), compulsive checking (superior temporal gyrus) and visual-spatial deficits (superior parietal lobe).
"Our findings extend our knowledge about the angular gyrus as a center wherein the brain constructs higher-level meaning from individual words during semantic comprehension and plays an important role in the fluent composition of meaning in language," Hamilton said.
Although there is still a good deal of research to be done, it is becoming clear that the angular gyrus, located towards the rear of the brain, is a key area in understanding more about dyslexia.
One brain region that has been implicated repeatedly in dyslexia is the inferior parietal lobule, a complex region that includes the parietal operculum (supramarginal gyrus, angular gyrus, and planum parietale).
The supramarginal gyms and the angular gyrus, located in the posterior portion of the LH, are assumed to be responsible for the ability to read.
Among younger adults, we found that the left angular gyrus and MFG could discriminate better after training between physically trained and untrained sequences, whereas among older adults, the left supplementary motor area and sensorimotor cortex could discriminate better after training between physically trained and untrained sequences.
Tang and colleagues [97] studied the default mode network (DMN) in patients with early-onset schizophrenia (12 to 19 years old); they found increased functional connection between the ventromedial prefrontal lobe and the right inferior temporal gyrus, left angular gyrus, and dorsomedial prefrontal lobe, but decreased functional connection between the right angular gyrus and the cerebellar tonsil, left superior frontal gyrus and right inferior semilunar lobule.
Recognising a person from the combined information of their face and voice therefore relies not only on the same brain networks involved in using only visual or only auditory information, but also on brain regions associated with attention (left angular gyrus) and memory (hippocampus).
In his view, surges of activity in the right angular gyrus of native signers may occur because this area integrates various lines of linguistic information, including grammar, word meanings, and emotional tone.
Dyslexic children's activation profiles during the printed word-recognition task consistently featured activation of the left basal temporal cortices (includes the inferior temporal gyrus and possibly the fusiform gyrus) followed by activation of the right temporoparietal areas (including the angular gyrus).
Earlier studies [23] using the statistical parametric mapping (SPM) software for data analysis found that compared to the cerebellum (the reference), patients with OCD showed changes in blood flow in the precuneus, left superior temporal gyrus, right superior gyri orbitales, bilateral superior frontal gyrus, and left superior parietal lobule; when compared to the whole brain region, these patients showed changes in blood perfusion in the bilateral precuneus, right cuneus, right temporal gyrus, left superior temporal gyrus, bilateral superior fontal gyrus, superior gyri orbitales, left superior parietal lobule, left frontal cingulate, bilateral putamina, right angular gyrus, and right cerebellum.
The sparks occurred in the brain's "angular gyrus" region, one of the dozen sections linked to love, and is also where we process visual images and sounds, language comprehension, metaphors and bodily self-representation.