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Related Experiment Video

Updated: May 21, 2026

A Randomized, Sham-Controlled Trial of Cranial Electrical Stimulation for Fibromyalgia Pain and Physical Function, Using Brain Imaging Biomarkers
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A Randomized, Sham-Controlled Trial of Cranial Electrical Stimulation for Fibromyalgia Pain and Physical Function, Using Brain Imaging Biomarkers

Published on: January 5, 2024

A power calculation guide for fMRI studies.

Jeanette A Mumford1

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

Social Cognitive and Affective Neuroscience
|May 30, 2012
PubMed
Summary
This summary is machine-generated.

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Power analyses for functional magnetic resonance imaging (fMRI) studies are becoming essential for grant applications. This guide offers practical tips for conducting reliable fMRI power calculations.

Area of Science:

  • Neuroimaging
  • Cognitive Neuroscience
  • Biostatistics

Background:

  • Historically, power analyses were infrequent in functional magnetic resonance imaging (fMRI) research.
  • Recent advancements in statistical methodologies and software have increased the accessibility and expectation of power analyses for fMRI studies.

Purpose of the Study:

  • To provide guidance on conducting robust power analyses for fMRI research.
  • To highlight key decisions and considerations for researchers undertaking power calculations.

Main Methods:

  • The guide emphasizes the importance of obtaining pilot data.
  • It details the process of defining a region of interest (ROI) for analysis.
  • It discusses other critical choices influencing power calculation reliability.

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Last Updated: May 21, 2026

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08:33

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Published on: January 5, 2024

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Published on: November 8, 2012

Main Results:

  • Power analysis software is becoming more automated, simplifying the process.
  • Despite automation, informed decision-making is crucial for accurate results.

Conclusions:

  • Researchers are increasingly expected to perform power analyses in fMRI grant proposals.
  • Following best practices in power analysis ensures the reliability and validity of fMRI study designs.