The effect of spherical projections on spin tests for brain maps | https://biorxiv.org/content/10.1101/2024.12.15.628553v1
Spin tests are the de facto null model for map-to-map comparisons in brain imaging. Why don't they perfectly control false positives? @vincebaz.bsky.social explores ⤵️
Spin tests are the de facto null model for map-to-map comparisons in brain imaging. Why don't they perfectly control false positives? @vincebaz.bsky.social explores ⤵️
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Namely, the projection to a spherical mesh distorts distance relationships between vertices of the cortical surface mesh.