کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6027553 1580912 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of three-shell and simplified volume conductor models in magnetoencephalography
ترجمه فارسی عنوان
مقایسه مدل هادی حجم سه پوسته و ساده شده در مغناطیس فالوگرافی
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
چکیده انگلیسی
We computed signal topographies for cortically constrained sources in the left hemisphere and compared the topographies using relative error and correlation metrics. The results show that the spongy bone has a minimal effect on MEG topographies, and thus the skull approximation of the three-shell model is justified. The three-shell model performed best, followed by the corrected-sphere and single-shell models, whereas the local-spheres and single-sphere models were clearly worse. The three-shell model was the most robust against the introduced segmentation error. In contrast to earlier claims, there was no noteworthy difference in the computation times between the realistically-shaped and sphere-based models, and the manual effort of building a three-shell model and a simplified model is comparable. We thus recommend the realistically-shaped three-shell model for experimental MEG work. In cases where this is not possible, we recommend a realistically-shaped corrected-sphere or single-shell model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 94, 1 July 2014, Pages 337-348
نویسندگان
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