Matching 8–13 Hz power share reduced the mean posterior entropy gap by 70.5% in 60 adults

We tested whether matching alpha power share removes most of the mean spectral entropy gap between eye states. We used 60 adults from OpenNeuro ds004148 version 1.0.1. The primary rule used session 1, an average reference, 280 planned seconds, and posterior spectra from 2 to 30 Hz. For each person, we set the 8-13 Hz share to the mean of the two measured shares. We kept the spectral shapes within and outside that band. This operation reduced the mean gap by 70.5%. The 95% person bootstrap interval was 66.7% to 74.7%. A positive gap remained. All nine planned checks also removed more than half the mean gap. An independent calculation and two complete EEG replay checks passed. The package preserves 360 input spectra, source hashes, code, results, bootstrap draws, and instructions. Matching is a mathematical operation. It does not establish a brain mechanism or measure time-domain entropy.

EEG · spectral entropy · alpha power · eye state · power spectrum · bootstrap · OpenNeuro · reproducibility