precentral gyrus


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Related to precentral gyrus: postcentral gyrus

precentral gyrus

[′prē¦sen·trəl ′jī·rəs]
(anatomy)
The cerebral convolution that lies between the precentral sulcus and the central sulcus and extends from the superomedial border of the hemisphere to the posterior ramus of the lateral sulcus.
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Dager and colleagues found that young adults who transitioned from moderate to heavy drinking over a 1-year follow-up had greater activation at baseline in the caudate, ACC, medial prefrontal cortex, precentral gyrus, insula, IFG, and OFC, compared with those who remained moderate drinkers or heavy drinkers throughout the study.
Asymmetry indices in the posterior cingulate gyrus, superior parietal lobule, fusiform, precentral gyrus, and precuneus smoothly ranged around zero in both MCI converters and nonconverters, indicating very mild asymmetry from baseline to follow-ups.
In addition to the parietal regions, activation overlap was also observed in the inferior frontal gyrus (IFG, involving the pars opercularis and pars triangularis which include Brodmann's areas 44 and 45) and the precentral gyrus among mind in the eyes, social animations, and the vPT tasks (see Figure 1, Table 4).
Abbreviations: AC = anterior commissure, ACA = anterior cerebral artery, ahPCG = arm-hand region of precentral gyrus, BRRC = Brain Rehabilitation Research Center, CIMT = constraint-induced movement therapy, CT = computed tomography, DTT = diffusion tensor tractographic, fMRI = functional magnetic resonance imaging, MAL = Motor Activity Log, MCA = middle cerebral artery, MRI = magnetic resonance imaging, PC = posterior commissure, PVWM = periventricular white matter, SD = standard deviation, UL = upper limb, VA = Department of Veterans Affairs.
Seizures were recorded and the seizure focus was localized to the inferior precentral gyrus and prefrontal area.
4), located in the precentral gyrus and anterior paracentral gyrus.
FAS can result from lesions in brain areas involved in speech production, including precentral gyrus, premotor mid-frontal gyrus, left subcortical prerolandic gyrus, postrolandic gyri, and left parietal area.
The independent samples t-test revealed that recent users had greater SWM response than abstinent users in the following regions: a large cluster spanning medial bilateral cingulate, medial frontal gyrus, and left superior and middle frontal gyri (Brodmann's area [BA] 8); medial bilateral superior frontal gyrus (BA 6/8); left insula and precentral gyrus (BA 13); and right insula and inferior frontal gyrus (BA 13; see Table 3 and Figure 3).
Areas of activation were observed bilaterally in the middle temporal gyrus (BA21) and the inferior frontal gyrus (BA47), the medial frontal gyrus (BA6) of the left hemisphere, the middle frontal gyrus (BA46) and the precentral gyrus (BA6)of the right hemisphere.
These are probably part of a neural network that involves most cortical areas (especially in the inferior parietal lobule, precentral gyrus and posterior part of the inferior frontal gyrus) that seems important for the cortical representation of sequential information and for learning from the observation of patterns of behaviour of others.
But those patients who had higher fitness levels had significantly greater white matter volume in the hippocampus, inferior temporal gyrus, and precentral gyrus.