gyrus


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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.]

gyrus

(ˈdʒaɪrəs)
n, pl gyri (ˈdʒaɪraɪ)
another name for convolution3
[C19: from Latin; see gyre]

gy•rus

(ˈdʒaɪ rəs)

n., pl. gy•ri (ˈdʒaɪ raɪ)
a convoluted fold of the brain.
[1835–45; < Latin gȳrus; see gyre]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gyrus - a convex fold or elevation in the surface of the brain
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.
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).
Participants' brain activation while correctly remembering names was significantly greater in four brain cortical regions (including the middle frontal gyrus, inferior temporal gryus, middle temporal gyrus, and fusiform gyrus) after exercise compared to after rest.
Many studies revealed that these drugs increase neurogenesis in dentate gyrus of hippocampus and this may contribute to their therapeutic effect.
Katsel, Ph.D., from the Icahn School of Medicine at Mount Sinai in New York City, and colleagues examined IRSP and endothelial cell markers in the parahippocampal gyrus of 30 controls, 19 individuals with AD, and 34 individuals with AD and type 2 diabetes (T2D) who had been treated with anti-diabetic drugs.
For many years, memory loss was treated as a singular disorder, but now scientists realized that Alzheimer's disease begins in a part of the brain called the entorhinal cortex, which lies at the foot of the hippocampus while the age-related memory loss, a far more common memory disorder, began within the hippocampus itself, in a region called the dentate gyrus.
They highlight the importance of additional neuropsychological deficits to visual present in lesions of the aforementioned areas, also showing that anomia and some memory impairments are related to lesions in the lower occipital rotation in the lingual gyrus in hippocampus and injuries of some major white matter tracts.
After variance analyses (with Alphasim correction) on the whole brain's grey matter volume with two groups' imaging data, it was found that compared to the control group, the grey matter volume of the patient group increased in the left superior frontal gyrus (t=4.41), and decreased in the left occipital gyrus (t=-4.27), lingual gyrus (t=-4.55) and upper cerebellum (t=-3.54) (see Table 3 and Figure 2).
During the Inflation event, a one-sample i-test revealed that the explosion risk level was positively associated with activity in the bilateral insula, while being negatively associated with activity in the left precentral gyrus and parietal, temporal, occipital, and cerebellar regions (see Table 2).
used the ReHo method to explore the brain activity characteristics of MDD patients in resting state; the results showed that the severity of anxiety was positively related to ReHo in the right insula; the degree of cognitive impairment is positively correlated with ReHo in the right frontal cortex and left anterior cingulate gyrus; late severity was positively associated with ReHo in the right posterior cingulate gyrus and the right insula; the severity of sleep disorders was positively correlated with ReHo in the dorsomedial anterior cingulate gyrus; and desperate severity is positively correlated with right ventral anterior cingulate gyrus and right inguinal reanimation [30].
The dentate gyrus is an anatomically and functionally well-characterized region of the mammalian hippocampal formation.
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.
Brain regions related to TPN include the bilateral anterior intraparietal sulcus (AIPS), bilateral inferior parietal lobule, insula, middle temporal gyrus, supplementary motor area (SMA), and frontal eye field [30].