Simulation of the Effects of Global Normalization Procedures in Functional MRI

We report on differences in sensitivity and false-positive rate across five methods of global normalization using resting-state fMRI data embedded with simulated activation. These methods were grand mean session scaling, proportional scaling, ANCOVA, a masking method, and an orthogonalization method...

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Veröffentlicht in:	NeuroImage (Orlando, Fla.) Fla.), 2002-10, Vol.17 (2), p.532-542
Hauptverfasser:	Gavrilescu, Maria, Shaw, Marnie E., Stuart, Geoffrey W., Eckersley, Peter, Svalbe, Imants D., Egan, Gary F.
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Attention - physiology Brain - anatomy & histology Brain - physiology Cluster Analysis Computer Simulation False Positive Reactions Humans Image Interpretation, Computer-Assisted Magnetic Resonance Imaging - methods Magnetic Resonance Imaging - statistics & numerical data Models, Neurological Signal Processing, Computer-Assisted
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