neuroimaging sample size calculator

Traditional power analysis (e.g., using GPower for a t-test) fails for neuroimaging because it cannot account for the massive multiple comparisons problem, spatial correlation structure, or the multi-level nature of neuroimaging inference. Neuroimaging requires simulation-based approaches that generate synthetic datasets, apply the full analysis pipeline including multiple comparison correction, and estimate power...

A competent programmer without neuroimaging training would use standard power formulas and dramatically overestimate the power of a whole-brain analysis. They would not know that cluster-extent thresholds, random field theory corrections, and spatial smoothness all affect the effective number of tests, nor that pilot-data-based simulation is the gold standard for neuroimaging power analysis. This skill encodes the...

This skill was generated by AI from academic literature. All parameters, thresholds, and citations require independent verification before use in research. If you find errors, please open an issue.