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Anatomical location of the corticospinal tract according to somatotopies in the centrum semiovale
- Anatomical location of the corticospinal tract according to somatotopies in the centrum semiovale
- Seo, Jeong Pyo; Chang, Pyung-Hun; Jang, Sung Ho
- Issue Date
- Neuroscience Letters, 523(2), 111-114
- Article Type
- Adult; Anterior Posterior Axis; Brain; Brain Mapping; Brain Region; Central Sulcus; Centrum Semiovale; Computer Program; Corticospinal Tract; Diffusion Tensor Imaging; Echo-Planar Imaging; Female; Hand; Human; Human Experiment; Humans; Left Hemisphere; Leg; Male; Middle Aged; Normal Human; Priority Journal; Probability; Pyramidal Tract; Pyramidal Tracts; Right Hemisphere; Semioval Center; Somatotopy; Young Adult
- Little is known about the somatotopic location of the corticospinal tract (CST) in the centrum semiovale (CS). We investigated the somatotopic location of the CST in the CS in the human brain using diffusion tensor tractography (DTT). Fifty-two healthy volunteers were recruited for this study. Diffusion tensor images (DTIs) were obtained at 1.5. T, and CSTs for the hand and leg were obtained using FMRIB software. Normalized DTT images were reconstructed using the Montreal Neurological Institute echo-planar imaging template supplied with the SPM. Individual DTI data were calculated as number of pixels in the CS. In the mediolateral direction, average distances of the highest probabilistic locations for hand and leg somatotopies were 25.57. mm and 21.72. mm from the midline between the right and left hemispheres, respectively. For the anteroposterior direction, the average distance of the highest probabilistic locations for hand and leg somatotopies were 0.4. mm and 5.2. mm behind the horizontal line between the medial end of the central sulcus and midline, respectively. In conclusion, hand somatotopy of the CST was found to be located at about 26. mm lateral to the midline almost along the horizon line between the medial end of central sulcus and midline, and leg somatotopy of the CST was found to be located medioposteriorly to the hand somatotopy of the CST. © 2012 Elsevier Ireland Ltd.
- ELSEVIER IRELAND LTD
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