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Thresholding of statistical maps in functional neuroimaging using the false discovery rate

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Genovese, Christopher R., Lazar, Nicole A. and Nichols, Thomas E. (2002) Thresholding of statistical maps in functional neuroimaging using the false discovery rate. NeuroImage, Vol.15 (No.4). pp. 870-878. doi:10.1006/nimg.2001.1037 ISSN 10538119.

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Official URL: http://dx.doi.org/10.1006/nimg.2001.1037

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Abstract

Findingobjective and effective thresholds for voxelwise statistics derived from neuroimaging data has been a long-standing problem. With at least one test performed for every voxel in an image, some correction of the thresholds is needed to control the error rates, but standard procedures for multiple hypothesis testing (e.g., Bonferroni) tend to not be sensitive enough to be useful in this context. This paper introduces to the neuroscience literature statistical procedures for controlling the false discovery rate (FDR). Recent theoretical work in statistics suggests that FDR-controlling procedures will be effective for the analysis of neuroimaging data. These procedures operate simultaneously on all voxelwise test statistics to determine which tests should be considered statistically significant. The innovation of the procedures is that they control the expected proportion of the rejected hypotheses that are falsely rejected. We demonstrate this approach using both simulations and functional magnetic resonance imaging data from two simple experiments.

Item Type: Journal Article
Subjects: Q Science > QA Mathematics
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: Faculty of Science, Engineering and Medicine > Science > Statistics
Library of Congress Subject Headings (LCSH): Brain -- Imaging -- Statistical methods, Brain -- Imaging -- Data processing, Magnetic resonance imaging -- Data processing, Magnetic resonance imaging -- Statistical methods, Statistical maps
Journal or Publication Title: NeuroImage
Publisher: Elsevier
ISSN: 10538119
Official Date: 28 March 2002
Dates:
DateEvent
28 March 2002Published
Volume: Vol.15
Number: No.4
Page Range: pp. 870-878
DOI: 10.1006/nimg.2001.1037
Status: Peer Reviewed
Publication Status: Published

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