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The shuffle-based PR noise floor (PR_shuffle_97p5) provides a per-area empirical null that accounts for finite-population dimensionality inflation. Sessions in which PR_raw falls below this floor are dominated by noise rather than signal, and should be flagged before cross-area hierarchy analyses.
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sha256:69aa3 — 5/27/2026, 10:41:59 AM (live)
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sha256:69aa3 — 5/27/2026, 10:41:59 AM (live)
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