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Search 3,721 documents across 34 fields — every claim tier-rated by evidence

3,721 Documents 34 Sections 43,625 Citations 34,852 Keywords Indexed 4 Evidence Tiers

3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.

101 results for "polyphonic music" — page 6 of 6

Y_5_14 Credible Altered States

Y_5_14 — Drumming and Rhythmic Entrainment: Percussive Paths to Trance

Drumming and rhythmic entrainment — the use of sustained, repetitive percussive sound to alter consciousness — is one of the oldest and most universal methods of inducing trance states across human cultures. From the fra

drumming rhythmic entrainment shamanic drumming theta waves Neher auditory driving

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