Variability in fMRI: A re-examination of inter-session differences

We revisit a previous study on inter‐session variability (McGonigle et al. [2000]: Neuroimage 11:708–734), showing that contrary to one popular interpretation of the original article, inter‐session variability is not necessarily high. We also highlight how evaluating variability based on thresholded...

Full description

Saved in:
Bibliographic Details
Published in:Human brain mapping 2005-03, Vol.24 (3), p.248-257
Main Authors: Smith, Stephen M., Beckmann, Christian F., Ramnani, Narender, Woolrich, Mark W., Bannister, Peter R., Jenkinson, Mark, Matthews, Paul M., McGonigle, David J.
Format: Article
Language:English
Subjects:
Adult
Adult and adolescent clinical studies
Biological and medical sciences
Brain - physiology
Brain Mapping
Electrodiagnosis. Electric activity recording
fMRI
Head Movements
Humans
Image Processing, Computer-Assisted
Investigative techniques, diagnostic techniques (general aspects)
longitudinal studies
Magnetic Resonance Imaging
Male
Medical sciences
Miscellaneous
Mood disorders
Nervous system
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Radiodiagnosis. Nmr imagery. Nmr spectrometry
reproducibility
Reproducibility of Results
session variability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We revisit a previous study on inter‐session variability (McGonigle et al. [2000]: Neuroimage 11:708–734), showing that contrary to one popular interpretation of the original article, inter‐session variability is not necessarily high. We also highlight how evaluating variability based on thresholded single‐session images alone can be misleading. Finally, we show that the use of different first‐level preprocessing, time‐series statistics, and registration analysis methodologies can give significantly different inter‐session analysis results. Hum. Brain Mapping 24:248–257, 2005. © 2005 Wiley‐Liss, Inc.
ISSN:1065-9471
1097-0193
DOI:10.1002/hbm.20080