Consciousness operates in a multi-scale hierarchical cascade, originating in terahertz quantum dipole oscillations in tubulin pi resonance clouds in microtubules, resonating upward in structural size, slowing in frequency through gigahertz, megahertz, kilohertz and hertz frequency ranges (EEG arising from 'interference beats'). Anesthetics dampen the quantum oscillations, slowing cascade resonance and preventing consciousness. The brain may be more like a quantum orchestra than a classical computer.