gyrus

(redirected from medial frontal gyrus)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to medial frontal gyrus: Middle temporal gyrus, Middle frontal gyrus

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 ?
Specifically, we observed stronger activation in both the medial frontal gyrus and the superior frontal gyrus for deceptive versus truthful responses.
They found that viewing a hated person increased the activity in several brain regions, including the medial frontal gyrus, right putamen, premotor cortex, frontal pole, and medial insula bilaterally.
It was found that the number of correct responses of Card C in the Stroop Color-Word Test was negatively correlated with the grey matter volumes of the upper lateral frontal gyrus (r=-0.38), the right dorsolateral upper frontal gyrus (r=-0.45), the upper left medial frontal gyrus (r=-0.50), the right medial frontal gyrus (r=-0.62),
(44) A subsequent study showed that binge drinking adolescents had greater activation in the medial frontal gyrus (meFG), SFG, IPL, and supramarginal gyrus, as well as less activation in the middle occipital gyrus, when compared with control subjects.
In addition to this, medial frontal gyrus and superior temporal gyrus which are known to be part of the DMN were shown to have higher activation values for the karate players.
Spatial conjunction analyses revealed that SCZ + S patients had significantly (p < 0.001) decreased activations specifically in the right medial frontal gyrus in comparison to both SCZ - S and healthy participants (Figures 1(a) and 1(b)).
This pair of components showed that a decrease in [sup.18]F-FDG uptake correlated with a decrease in perfusion in the frontal, parietal, and temporal regions, including the medial frontal gyrus (MFG), anterior cingulate cortex (ACC), posterior cingulate cortex (PCC)/precuneus, superior temporal gyrus (STG), temporal pole, and orbitofrontal gyrus (Figure 1).
Compared with the healthy subjects, the hyperthyroidism group showed significantly decreased VMHC values in the bilateral medial frontal gyrus (MeFG) (Table 1, Figure 1).
Furthermore, HT7 stimulation as compared with the LI5 stimulation produced a higher BOLD signal response in the bilateral precuneus, precentral gyrus, postcentral gyrus, right middle occipital gyrus, posterior cingulate gyrus, medial frontal gyrus, cingulate gyrus, paracentral lobule, left superior temporal gyrus, and thalamus.
Results: The main areas with increased brain activation were in frontal and parietal lobe, including left medial frontal gyrus, left inferior frontal gyrus, right middle frontal gyrus, right postcentral gyrus, and inferior parietal lobule in patients after CRT, yet no decreased brain activation was found.
Component 15 from the SBM analysis showed differences in the brains of schizophrenic and healthy volunteers in the middle frontal gyrus, precentral gyrus, subgyrus, postcentral gyrus, superior frontal gyrus, medial frontal gyrus, cingulate gyrus, and superior temporal gyrus.

Full browser ?