precentral gyrus


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Related to precentral gyrus: postcentral gyrus
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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 ?
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.
sup][20] A previous study also found that VMHC was decreased in the precuneus, precentral gyrus, superior temporal gyrus, occipital gyrus, and cerebellum in patients with first-episode and drug-naive schizophrenia, and VMHC reduction in the precentral gyrus was associated with positive symptoms.
The areas that showed significantly less activation were the middle and inferior temporal gyrus in the right hemisphere with overlapping to the parietotemporal junction, the bilateral middle frontal circumvolution and the precentral gyrus (see Figure 2 and Table 1).
Precentral Artery (PCA): The artery extends out on the medial surface of the operculum and supplies the posterior parts of the middle and inferior frontal gyri as well as the lower parts of the precentral gyrus.
For the fMRI task, BPD patients demonstrated greater differences in activation than controls, when viewing negative pictures compared with neutral pictures, in limbic regions (amygdala and right hippocampus and parahippocampal areas) as well as in the superior frontal gyrus, right precentral gyrus and cerebellum, while control group showed greater activation in left precentral gyrus and right orbitofrontal area.
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.
Clinical scores were correlated with the connection between the precentral gyrus and putamen in the left hemisphere (r = 0.
The arm-hand region of precentral gyrus (ahPCG) was mapped without knowledge of severity of paresis on Matsui and Hirano atlas templates [17] (supplemented by Damasio atlas templates [18]).
The researchers found that the experienced psychographers showed lower levels of activity in the left hippocampus (limbic system), right superior temporal gyrus, and the frontal lobe regions of the left anterior cingulate and right precentral gyrus during psychography compared to their normal (non-trance) writing.