Clin Neuroradiol (2018) 28:267–281 DOI 10.1007/s00062-017-0557-0 ORIGINAL ARTICLE Localized N20 Component of Somatosensory Evoked Magnetic Fields in Frontoparietal Brain Tumor Patients Using Noise-Normalized Approaches 1 1 1 1 Nor Saﬁra Elaina · Aamir Saeed Malik · Wafaa Khazaal Shams · Nasreen Badruddin · 2 2 Jafri Malin Abdullah · Mohammad Faruque Reza Received: 16 October 2016 / Accepted: 3 January 2017 / Published online: 23 January 2017 © Springer-Verlag Berlin Heidelberg 2017 Abstract spheres of the control group. These results were consistent Purpose To localize sensorimotor cortical activation in for both dSPM and sLORETA approaches. 10 patients with frontoparietal tumors using quantitative Conclusion Tumors in the sensorimotor cortex lead to magnetoencephalography (MEG) with noise-normalized cortical functional reorganization and an increase in N20m approaches. amplitude and current-source strengths. Noise-normalized Material and Methods Somatosensory evoked magnetic approaches for MEG analysis that are integrated with MRI ﬁelds (SEFs) were elicited in 10 patients with somatosen- show accurate and reliable localization of sensorimotor sory tumors and in 10 control participants using electrical function. stimulation of the median nerve via the right and left wrists. We localized the N20m component of the SEFs Keywords Brodmann area 3b · Frontoparietal tumor · using dynamic statistical
Klinische Neuroradiologie – Springer Journals
Published: Jan 23, 2017
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