کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6036578 1188777 2010 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of filtering on Granger causality based multivariate causality measures
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
پیش نمایش صفحه اول مقاله
The effect of filtering on Granger causality based multivariate causality measures
چکیده انگلیسی
The simulation results suggest that preprocessing without a strong prior about the artifact to be removed disturbs the information content and time ordering of the data and leads to spurious and missed causalities. Only if apparent artifacts like a current or movement artifact are present, filtering out the respective disturbance seems advisable. While oversampling poses no problem, decimation by a factor greater than the minimum time shift between the time series may lead to wrong inferences. In general, the multivariate causality measures are very sensitive to data preprocessing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 50, Issue 2, 1 April 2010, Pages 577-588
نویسندگان
, , , , ,