کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1151049 958182 2009 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hypothesis testing, power and sample size determination for between group comparisons in fMRI experiments
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات آمار و احتمال
پیش نمایش صفحه اول مقاله
Hypothesis testing, power and sample size determination for between group comparisons in fMRI experiments
چکیده انگلیسی
Modern methods for imaging the human brain, such as functional magnetic resonance imaging (fMRI) present a range of challenging statistical problems. In this paper, we first develop a large sample based test for between group comparisons and use it to determine the necessary sample size in order to obtain a target power via simulation under various alternatives for a given pre-specified significance level. Both testing and sample size calculations are particularly critical for neuroscientists who use these new techniques, since each subject is expensive to image.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Statistical Methodology - Volume 6, Issue 2, March 2009, Pages 133-146
نویسندگان
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