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Soc Cogn Affect Neurosci. 2012 Aug;7(6):738-42. doi: 10.1093/scan/nss059. Epub 2012 May 28.

A power calculation guide for fMRI studies.

Author information

1
Department of Psychology, University of Texas at Austin, 1 University Station A8000 Austin, TX, 78712-0187, USA. mumford@mail.utexas.edu

Abstract

In the past, power analyses were not that common for fMRI studies, but recent advances in power calculation techniques and software development are making power analyses much more accessible. As a result, power analyses are more commonly expected in grant applications proposing fMRI studies. Even though the software is somewhat automated, there are important decisions to be made when setting up and carrying out a power analysis. This guide provides tips on carrying out power analyses, including obtaining pilot data, defining a region of interest and other choices to help create reliable power calculations.

PMID:
22641837
PMCID:
PMC3427872
DOI:
10.1093/scan/nss059
[Indexed for MEDLINE]
Free PMC Article

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