gyrus

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Related to angular gyrus: Wernicke's area

gyrus

[′jī·rəs]
(anatomy)
One of the convolutions (ridges) on the surface of the cerebrum.
References in periodicals archive ?
Interestingly, a decrease in white matter was also found in our OCD patients in two temporo-parietal regions: the right angular gyrus and the right superior temporal gyrus.
Hamilton and team, which also included Jonathan Peelle PhD, an assistant professor in the Department of Otolaryngology at the Washington University School of Medicine, Michael Bonner, PhD, a postdoctoral fellow in the Department of Psychology at Penn, and Murray Grossman, MD, EdD, professor of Neurology and director of the Penn Frontotemporal Dementia Center, looked at the role of the left angular gyrus in semantic memory by applying high definition tDCS in healthy adults to modulate neural activity and determine its effect on semantic integration.
There were significant positive correlations for activation at the right inferior parietal lobule and the angular gyrus for happy faces, in the left fusiform gyrus and the right posterior insula for sad faces, and in the left parietal lobule for angry faces.
Next-door, the angular gyrus (a gyrus is a "ridge" in the brain) helps to make sense of the words and letters we come across when reading.
The supramarginal gyrus (SM) is therefore, longer than it is tall and the angular gyrus (ANG) is more posterior and inferior.
The brain pathway for normal reading has also been identified (from visual area to angular gyrus to Wernicke's area to Broca's area), as have the sequences involved in memory storage.
In Geschwind's model the grammatical and lexical representations of language arise in the superior temporal gyrus (Wernicke's area) of the LH, and these representations are transformed via a band of association fibers that course around the sylvian lip through the angular gyrus and into the frontal lobe, terminating in the third frontal convolution of the LH (Broca's Area).
The left angular gyrus was therefore linked to memories of visual word forms that are required for both reading and writing.
Described by study authors as the Parietal Memory Network (PMN), the new memory and learning network shows consistent patterns of activation and deactivation in three distinct regions of the parietal cortex in the brain's left hemisphere -- the precuneus, the mid-cingulate cortex and the dorsal angular gyrus.
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).