Preprint: low-frequency EEG precedes pupil dynamics by ~764ms
AnnaCiaunica · x · 2026-11-12
A bioRxiv preprint finds that low-frequency EEG activity (2–12Hz) precedes pupil dynamics by roughly 764ms, while higher frequencies show a distinct coupling range. Granger-causality analysis indicated predominantly EEG-to-pupil directional coupling, suggesting brain activity drives pupil changes rather than the reverse.
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