precentral gyrus การใช้

• Brodmann area 4 is part of the precentral gyrus.
• The pyramidal cells of the precentral gyrus are also called upper motor neurons.
• The VTh projects to upper motor neurons in the primary motor cortex ( precentral gyrus ).
• SLF III connects the rostral inferior parietal cortex which receives information from the ventral precentral gyrus.
• More specifically, subvocal rehearsal and verbal maintenance are associated with the posterior left precentral gyrus.
• The primary motor cortex is located on the precentral gyrus and is often visualized as the motor homunculus.
• The primary motor cortex or precentral gyrus, is one of the most important areas in the frontal lobe.
• The precentral gyrus is the most posterior gyrus of the frontal lobe and it lies anterior to the central sulcus.
• E . g ., the precentral gyrus is in front of the central sulcus, and behind the precentral sulcus.
• To stimulate the pronator teres, a signal begins in the precentral gyrus in the brain and goes down through the internal capsule.
• These tracts transport motor signals that originated in the precentral gyrus and travelled through the internal capsule to the medulla oblongata and pyramids.
• The arm and hand motor area is the largest and occupies the part of precentral gyrus, located inbetween the leg and face area.
• BFP appears to be a symmetrical polymicrogyria that extends anteriorly from the frontal poles to the posterior precentral gyrus, and inferiorly to the frontal operculum.
• When the precentral gyrus of the frontal lobe is stimulated, specific muscles in the body will contract based on the location of the brain that receives the electric signal.
• Lesions of the precentral gyrus result in paralysis of the contralateral side of the body ( facial palsy, arm-/ leg monoparesis, hemiparesis )-see upper motor neuron.
• Largely coincident with the Brodmann ( human ), it is located primarily in the rostral portion of the precentral gyrus and caudal portions of the superior frontal gyrus and the middle frontal gyrus, It aids in cerebral control of movement.
• The fibers of the upper motor neurons project out of the precentral gyrus ending in the brainstem, where they will decussate ( intersect ) within the lower medulla oblongata to form the lateral corticospinal tract on each side of the spinal cord.
• Note that the central sulcus ( sometimes referred to as the central fissure ) divides the primary motor cortex ( on the precentral gyrus of the posterior frontal lobe ) from the somatosensory cortex ( on the postcentral gyrus of the anterior parietal lobe ).
• File : Somatic Nervous System Image . svg | 1 . ( Brain ) Precentral gyrus : the origin of nerve signals initiating movement . 2 . ( Cross Section of Spinal Cord ) Corticospinal tract : Mediator of message from brain to skeletal muscles . 3.
• Tactile imagery is found to occur in the dorsolateral prefrontal area, inferior frontal gyrus, frontal gyrus, insula, precentral gyrus, and the medial frontal gyrus with basil ganglia activation in the ventral posteriomedial nucleus and putamen ( hemisphere activation corresponds to the location of the imagined tactile stimulus ).