gy·rus

(jī′rəs)

n. pl. gy·ri (-rī′)

A rounded ridge, as on the surfaces of the cerebral hemispheres.

[Latin gȳrus, circle; see gyre.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

gyrus

(ˈdʒaɪrəs)

n, pl gyri (ˈdʒaɪraɪ)

another name for convolution³

[C19: from Latin; see gyre]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

gy•rus

(ˈdʒaɪ rəs)

n., pl. gy•ri (ˈdʒaɪ raɪ)

a convoluted fold of the brain.

[1835–45; < Latin gȳrus; see gyre]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

gyrus - a convex fold or elevation in the surface of the brain

convolution

anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"

frontal gyrus - any of the convolutions of the outer surface of the frontal lobe of the cerebrum

temporal gyrus - any of the convolutions of the outer surface of the temporal lobe of the cerebrum

parietal gyrus - any of the convolutions of the outer surface of the parietal lobe of the cerebrum

occipital gyrus - any of the convolutions of the outer surface of the occipital lobe of the cerebrum

cerebrum - anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans

central gyrus - either of two gyri on either side of the central sulcus

Translations

gy·rus

n. L. circunvolución, porción elevada de la corteza cerebral;

Broca's ___ → ___ de Broca, tercera, frontal inferior;

frontal, superior ___ → ___ frontal superior;

inferior, lateral occipital ___ → ___ occipital inferior lateral;

superior occipital ___ → ___ occipital superior.

English-Spanish Medical Dictionary © Farlex 2012

Mentioned in

References in periodicals archive

Compared with the normal elderlies, ReHo values decreased in aMCI patients in the left temporal lobe (middle temporal gyrus and inferior temporal gyrus), left parahippocampal gyrus, occipital lobe, lingual gyrus, precuneus, and other regions (P<0.05; Figure 3, Table 1), while ReHo values increased in the right side frontal lobe (inferior frontal gyrus), left superior temporal gyrus, precentral gyrus (frontal lobe), right thalamus, the left fusiform gyrus, and other regions (P<0.05; Figure 4, Table 2).

A study on changes of the resting-state brain function network in patients with amnestic mild cognitive impairment

They found activation in the left superior temporal gyrus before the intervention; after the intervention activity was seen in the upper, middle and inferior temporal gyrus, plus activations were found in the fronto-medial turn and right turn supramarginal.

Correlatos neuroanatomicos de la anomia: revision de tema

[18] According to the results of correlation analyses conducted on patients' facial emotion cognition task data and brain imaging data, it has been found that the brain areas with abnormal grey matter which are positively correlated with the shift slope are the right superior temporal gyrus, middle temporal gyrus, left middle temporal gyrus, inferior temporal gyrus and fusiform gyrus.

An Association Study on the Cognitive Function and the Cerebral Grey Matter Volume of Patients with First-Episode Schizophrenia

(27) Furthermore, heavy-drinking adolescents showed accelerated reductions in the thalamus/hypothalamus, inferior temporal gyrus, middle temporal gyrus (miTG), caudate, and brain stem, with greater lifetime alcohol use associated with a greater reduction in gray-matter volume in the left caudate and brainstem.

Effects of Binge Drinking on the Developing Brain: Studies in Humans

The ReHo values in the depression group of the current study were increased in the right superior temporal gyrus, right middle temporal gyrus, left inferior temporal gyrus, and left middle temporal gyrus, as well as in the superior temporal gyrus.

Neural Basis of Depression Related to a Dominant Right Hemisphere: A Resting-State fMRI Study

The handmade brain model showing several structures, such as (1) superior frontal gyrus; (2) middle frontal gyrus; (3) inferior frontal gyrus; (4) precentral gyrus; (5) postcentral gyrus; (6) superior parietal lobule; (7a) inferior parietal lobule--supramarginal gyrus; (7b) inferior parietal lobule angular gyrus; (8) superior temporal gyrus; (9) middle temporal gyrus and; (10) inferior temporal gyrus.

Simple and Low Cost Tridimensional Model of the Cerebral Hemisphere/Modelo Tridimensional Basico y de Bajo Costo del Hemisferio Cerebral

Results: Compared with the healthy control group, the two schizophrenia groups showed significantly increased ReHo in the right caudate and inferior temporal gyrus and decreased ReHo in the bilateral postcentral gyrus and thalamus and the right inferior occipital gyrus (false discovery rate corrected, P < 0.05).

Increased Local Spontaneous Neural Activity in the Left Precuneus Specific to Auditory Verbal Hallucinations of Schizophrenia