Variability in fMRI: A re-examination of intersession Differences

Smith, Stephen M., Beckmann, Christian F., Ramnani, Narender, Woolrich, Mark W., Bannister, Peter R., Jenkinson, Mark, Matthews, Paul M. and McGonigle, David ORCID: https://orcid.org/0000-0001-9595-6352 2005. Variability in fMRI: A re-examination of intersession Differences. Human Brain Mapping 24 (3) , pp. 248-257. 10.1002/hbm.20080

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Abstract

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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Psychology
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Uncontrolled Keywords:	fMRI; session variability; reproducibility; longitudinal studies
Publisher:	Wiley
ISSN:	1097-0193
Last Modified:	17 Oct 2022 09:32
URI:	https://orca.cardiff.ac.uk/id/eprint/3447

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