precentral gyrus


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to precentral gyrus: postcentral gyrus
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.precentral gyrus - the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area
central gyrus - either of two gyri on either side of the central sulcus
frontal cortex, frontal lobe - that part of the cerebral cortex in either hemisphere of the brain lying directly behind the forehead
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).
The results indicated that using the activation signals from the attention-function-related region (middle frontal gyrus-angular gyrus)(7) and the motor-function-related region (precentral gyrus)(8) were optimal for correctly distinguishing the presence or absence of concurrent ASD.
(28) Luciana and colleagues reported similar findings, such that alcohol-naive controls showed an increase in volume in white-matter regions of the precentral gyrus, miTG, SFG, and lingual gyrus between baseline and follow-up, whereas binge drinking adolescents did not.
Furthermore, lateralized cortical decreases were observed in the right middle frontal gyrus, inferior frontal gyrus, precentral gyrus, superior temporal gyrus, thalamus, and putamen and in the left cuneus, precuneus, cingulate gyrus, fusiform gyrus, middle temporal gyrus, and medial frontal gyrus.
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).
In HS, positive correlations between amplitude and neural activity were observed in the CAL, middle cingulate cortex (MCC), cuneus, fusiform gyrus, and insula, and negative correlations were observed in the anterior cingulate cortex (ACC), prefrontal cortex (PFC), and precentral gyrus (PreC).
In some other regions, including the posterior cingulate, superior parietal lobule, fusiform, precentral gyrus, and precuneus, group asymmetry indices varied slightly over 5 visits and the values approximately equal zero (Figure 2).
For instance, voxel-based morphometry (VBM) analysis exhibited gray matter density increments in right and medial cerebellar areas for badminton players [4] as well as in thalamus and precentral gyrus for divers [7].
Diffusion-weighted magnetic resonance imaging (DWI-MR) revealed a focal high intensity signal in the right precentral gyrus at high convexity with a cerebral infarct.
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.
(2) This cluster extends rostrally to include the supplementary motor area, caudally to include the precentral gyrus, and medially to include the insula.
These significantly different nodes were mainly concentrated in the bilateral lenticular nucleus: the putamen; bilateral lingual gyrus; bilateral amygdala; bilateral thalamus; bilateral median cingulate and paracingulate gyri; right posterior cingulate gyrus; bilateral cuneus; left anterior cingulate and paracingulate gyri; right superior frontal gyrus, orbital part; right middle frontal gyrus; right temporal pole; middle temporal gyrus; left precentral gyrus; right lenticular nucleus; pallidum; and so forth.