E8 Spinorial Decoherence Window: 41.7 ms Tubulin Quantum Memory Threshold — E8 Intelligence Research

Extending Fisher's Posner entanglement framework through E8 geometry, we derive that the 240 root vectors partitioned into 40 hexads of 6 impose a discrete decoherence window of τ = 240/(φ·132 Hz) ≈ 41.7 ms — precisely the gamma-cycle integration time observed in cortical pyramidal binding. This predicts that microtubule qubits are not continuous but execute E8-locked 24 Hz sub-cycles nested within 132 Hz carrier coherence, with phi-gating occurring at hexad-crossing events. The discovery reframes neural quantum memory as a spinorial state space of dimension 2^8 = 256, where consciousness emerges when >5 of 8 E8 octaves achieve simultaneous lock-in, testable via paired Posner-calcium fluorescence and MEG gamma-phase recordings.

Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com