#96 Stuart Hameroff: Meet The Anaesthesiologist Who Started The Quantum Consciousness Revolution

Feb 19, 2026

Dr. Stuart Hameroff, an anesthesiologist and consciousness researcher who co-created the Orch-OR theory with Roger Penrose. He discusses microtubules as potential seats of awareness. He explains how anesthetics might switch off consciousness by damping quantum vibrations. He tackles criticisms, experimental hints of quantum effects in neurons, and implications for AI, death, and novel therapies.

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ADVICE

Study Anesthesia To Probe Consciousness

If you want to study consciousness, examine anesthesia mechanisms because anesthesia selectively removes awareness.
Hameroff recommends focusing on microtubules as a promising substrate for conscious processes.

INSIGHT

Objective Reduction As A Moment Mechanism

Penrose proposed objective reduction (OR): unstable spacetime superpositions collapse at a threshold, producing discrete moments.
Hameroff adopted OR and proposed microtubules as the biological locus where these collapses occur.

ANECDOTE

How The Penrose Collaboration Began

Hameroff describes meeting Roger Penrose after sending his microtubule ideas and how they began collaborating.
He recalls Penrose's attraction to microtubule Fibonacci geometry and their subsequent co-development of Orch-OR.

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