Orch OR

Stuart Hameroff’s research pursued microtubule information processing and anesthetic action. In the mid-1990s he teamed with eminent British physicist and Nobel Laureate Sir Roger Penrose to develop a controversial quantum theory of consciousness (‘orchestrated objective reduction’, ‘Orch OR’) based on microtubule quantum computing. Harshly criticized initially, Orch OR is now supported by experimental results including anesthetic action. In 2017, with Sir Roger Penrose, James Tagg, Ivette Fuentes and Erik Viierre, Hameroff co-founded the Penrose Institute, intended to support research based on the various works of Sir Roger (cosmology, quantum mechanics, general relativity, black holes, geometry and consciousness).


Hameroff, Stuart. Consciousness, Cognition and the Neuronal Cytoskeleton – A New Paradigm Needed in Neuroscience.  Front. Mol. Neurosci., 16 June 2022 https://doi.org/10.3389/fnmol.2022.869935


Andrea Morris, Forbes

Nov 4, 2021


An Experiment For Consciousness? Scientists And Philosophers Across Three Countries Debate It

Although smaller than a neuron, microtubules may be large enough to host proto-conscious events (quantum collapses) of a particular scale or quantity necessary to give rise to conscious experience.

Stuart Hameroff MD and Sir Roger Penrose



August 2021 - Program Outline:

Day 1 – Tuesday -  August 3, 2021   9:00 am – 12:30 pm  MST -AZ

WelcomeStuart Hameroff, University of Arizona

9:00 am–10:30 am - Overview, Sir Roger Penrose, Nobel Laureate, Oxford U - Consciousness, Quantum State Reduction, Black holes, and Conformal Cyclic Cosmology— Connecting Threads


Session Chair, Sir Roger Penrose, Nobel Laureate, Oxford U

10:30 am–11:15 am - Reinhard Genzel, Nobel Laureate, Max Planck Institute/UC Berkeley -  A 40-Year Journey

11:15 am–12:00 noon - Roger Blandford, Stanford University - Black Holes - Nature or Nurture?: The Roles of Rotation and Accretion in Powering Cosmic Sources

12:00 noon–12:30 pm   Discussion

Day 2 – Wednesday -  August 4, 2021   9:00 am – 12:30 pm MST - AZ


Session ChairRoger Blandford, Stanford University

9:00 am–9:45 am - Ivette Fuentes-Guridi, University of Southampton - Exploring the unification of quantum theory and general relativity with a Bose-Einstein condensate”   

9:45 am–10:30 am - Hendrik Ulbricht, University of Southampton - Probing new physics by levitated mechanical systems

10:30 am–11:15 am - Dirk Bouwmeester, UC Santa Barbara | Leiden University - An experimental investigation of the reduction of the quantum wavefunction

11:15 am–12:00 noon - Philip C.E. Stamp, University of British Columbia - The correlated worldline (CWL)  theory of quantum gravity

12:00 noon–12:30 pm  Discussion                          

Day 3 – Thursday -  August 5, 2021   9:00 am – 12:30 pm MST - AZ


Session Chair - Justin Riddle, University of North Carolina

9:00 am–9:45 am - Stuart Hameroff, University of Arizona - The Orch OR theory of consciousness

9:45 am–10:30 am - Greg Scholes, Princeton University - Biological quantum phenomena and the brain

10:30 am–11:15 am - Alysson Muotri, UC San Diego - Complex neural networks spontaneously emerge from human brain organoids


11:15 am-11:25 am  - Panel Chair - Jack Tuszyński, University of Alberta - Opening Remarks   

11:25 am-11:35 am - Aarat Kalra, Princeton University - Light at the end of the tunnel: Optical signaling through microtubules

11:35 am–11:45 am - Travis Craddock, Nova Southeastern U - Fano resonances in the resonance Raman spectra of tubulin and microtubules reveals active quantum effects

11:45 am–11:55 am - Aristide Dogariu, University of Central Florida - Experimental and computational insights into the remarkable electromagnetic properties of microtubules

11:55 am–12:05 pm - M. Bruce MacIver, Stanford University - Probing consciousness with anesthetics

12:05 pm–12:15 pm - Anirban Bandyopadhyay, National Institute of Material Sciences, Japan - Triplet of triplet fractal resonance band of tubulin, microtubule and neuron membrane: Quantum optics & microwave study

12:15 pm–12:45 pm    Discussion

Day 4 – Friday - August 6, 2021   9:00 am – 12:30 pm MST - AZ


Session Chair -  Sir Roger Penrose, Nobel Laureate, Oxford University  

9:00 am–9:45 am - Paul Tod, Oxford University - The mathematics behind Penrose’s Conformal Cyclic Cosmology

9:45 am–10:30 am - Brian Keating, UC San Diego - Was there a Big Bang?

10:30 am–11:15 am - Krzysztof Meissner, University of Warsaw, Poland - Black holes and Conformal Cyclic Cosmology

11:15 am–12:00 noon - Vahe Gurzadyan, Yerevan Physics Institute, Armenia - Cosmological Constant, CCC, observations

12:00 noon–12:30 pm  Discussion


October 6, 2020

Roger Penrose -  Nobel Prize Recipient

The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics 2020 with one half to Roger Penrose for the discovery that black hole formation is a robust prediction of the general theory of relativity and the other half jointly to Reinhard Genzel and Andrea Ghez for the discovery of a supermassive compact object at the centre of our galaxy.  Roger Penrose's affiliation at the time of the Nobel award: University of Oxford, Oxford, United Kingdom -  The Royal Swedish Academy of Sciences, Physics, 2020 - Scientific Background on the Nobel Prize in Physics 2020  View | Download 2.64 MB

https://www.kva.se/en/pressrum - press release    APS-American Physical Society - press release


Roger Penrose Early Publications 

R. Penrose, "Asymptotic Properties of Fields and Space-Times," Phys. Rev. Lett. 10, 66 (1963).

R. Penrose, "Gravitational Collapse and Space-Time Singularities," Phys. Rev. Lett. 14, 57 (1965).