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Statistical analysis of multi‐subject fMRI data: Assessment of focal activations
Author(s) -
Bosch Volker
Publication year - 2000
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/(sici)1522-2586(200001)11:1<61::aid-jmri9>3.0.co;2-c
Subject(s) - voxel , functional magnetic resonance imaging , computer science , variance (accounting) , magnetic resonance imaging , subject (documents) , pattern recognition (psychology) , test (biology) , artificial intelligence , statistical analysis , data mining , statistics , medicine , mathematics , radiology , accounting , library science , business , paleontology , biology
A simple procedure for analyzing multi‐subject functional magnetic resonance imaging (fMRI) data is proposed. In the first step, a voxel‐wise t ‐test across standardized z‐maps is performed to identify areas that are consistently activated across subjects. In the second step, for each area, individual mean z‐scores are calculated and subsequently subjected to an analysis of variance. An example is provided. J. Magn. Reson. Imaging 2000;11:61–64. © 2000 Wiley‐Liss, Inc.