We describe an experiment using superconducting transmon qubits that demonstrates wavefunction collapse consistent with Orchestrated Objective Reduction (Orch-OR) - the theory of consciousness proposed by Sir Roger Penrose and Stuart Hameroff. The experiment performs a partial measurement on a qubit. It uses the result of that measurement to move an estimated 10e-12 kg of mass in one of two locations separated by approximately 1 mm. In standard quantum mechanics, the partial measurement leaves the system in an improper mixture, a state that appears probabilistic but retains quantum coherence. This is mathematically indistinguishable from a proper mixture, where the state has genuinely collapsed. According to Penrose's theory, improper mixtures can lead to gravitationally induced collapse. Results of our experiment show a change in the circuit evolution that is consistent with wavefunction collapse driven by such an improper mixture. The experiment is performed on an IBM Eagle 127-qubit processor using IBM's programming framework Qiskit.
We describe an experiment using superconducting transmon qubits that demonstrates wavefunction collapse consistent with Orchestrated Objective Reduction (Orch-OR) - the theory of consciousness proposed by Sir Roger Penrose and Stuart Hameroff. The experiment performs a partial measurement on a qubit. It uses the result of that measurement to move an estimated 10e-12 kg of mass in one of two locations separated by approximately 1 mm. In standard quantum mechanics, the partial measurement leaves the system in an improper mixture, a state that appears probabilistic but retains quantum coherence. This is mathematically indistinguishable from a proper mixture, where the state has genuinely collapsed. According to Penrose's theory, improper mixtures can lead to gravitationally induced collapse. Results of our experiment show a change in the circuit evolution that is consistent with wavefunction collapse driven by such an improper mixture. The experiment is performed on an IBM Eagle 127-qubit processor using IBM's programming framework Qiskit.
Despite centuries of scientific inquiry, the origin of human consciousness, characterized by self-awareness and the presence of qualia, remains one of the deepest mysteries in neuroscience. Orchestrated Objective Reduction (Orch OR), as proposed by Roger Penrose and Stuart Hameroff, posits that consciousness arises from the objective reduction of quantum superpositions within entangled neural microtubules, triggered by gravitational self-energy. Recent theoretical and biophysical studies have renewed interest in quantum coherence in biological systems, including terahertz vibrational measurements, advances in quantum biology, and computational modeling of microtubule dynamics. This review synthesizes these developments and examines major critiques of Orch OR, particularly the challenge of maintaining quantum coherence in warm, wet biological environments. It further introduces the Quantum Cognition Gradient (QCG), a phenomenological, heuristic framework that extends Orch OR by proposing a scalable relationship between cognitive complexity and the formation, persistence, and coordination of quantum-coherent microtubule states prior to objective reduction, while leaving the underlying Diósi–Penrose collapse mechanism unchanged. Finally, several experimental strategies, including terahertz spectroscopy, entanglement-detection assays, interferometric microscopy, and neuromodulatory perturbation studies, are outlined as potential approaches for empirically evaluating predictions of both Orch OR and the QCG framework. By integrating contemporary developments in quantum biology with a quantitative conceptual framework, this review presents Orch OR and the proposed QCG as testable, hypothesis-generating models for investigating the possible relationship between quantum processes and consciousness.
Abstract Roger Penrose has long supported the view that wave function collapse, or more accurately wave packet reduction, is one of the defining aspects of consciousness In collaboration with Stuart Hameroff, he has suggested that it can be achieved by quantum gravity, giving rise to their well-known Orch OR theory of wave function collapse Their theory has a fundamental disadvantage, however Quantum gravity is too general; it applies at all points where matter is present, ie in all kinds of circumstance where wave packet reduction is not observed There is no hint as to why cell interiors are of special importance That assumption cannot be justified However, the Orch OR approach does acknowledge that only a situation governed by purely non-linear physics can offer circumstances where quantum wave-packets will be reduced; non-linearity must be at the heart of the theory This paper identifies a biological condition of non-linearity providing an advantageous way to explain objective reduction, OR, of wave packets: critical instability in complexity biology, known as ‘criticality’ The condition provides a rigorous reason why wave packet reduction should occur; one grounded in well-accepted modern biology, complexity biology This paper develops the idea further: it demonstrates how critical instabilities are found not in the cytoplasmic reticulum where Penrose and Hameroff site their Orch OR, but under the very circumstances where one would expect consciousness to be located: at the loci of control of biological regulatory systems Wave packet reduction can then select the future that the organism desires, doing so on a microscopic quantum level
FINDING: Orch-OR theory links consciousness to quantum wavefunction collapse in microtubules, but the search results yield no new mathematical formalism — only restatements of Penrose's objective reduction (OR) and Hameroff's orchestration. The arXiv paper (2105.02314) attempts to merge integrated information theory (Φ) with collapse dynamics, but no equations are extracted in the snippets. MATH: No explicit equations, constants, or ratios appear in the provided text. The only implicit mathematical anchors are: - Penrose's OR criterion: EG=ℏ/τ (gravitational self-energy EG vs. collapse time τ) — not stated but implied. - Integrated Information Theory: Φ (a scalar measure of irreducibility) — referenced but not quantified. - No golden ratios, no base-60, no crystallographic symmetries, no root systems appear in the search results. CONNECTION: None found in the text. However, Orch-OR's microtubule geometry (tubulin dimers arranged in hexagonal Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
Features of consciousness difficult to understand in terms of conventional neuroscience have evoked application of quantum theory, which describes the fundamental behavior of matter and energy. In this paper we propose that aspects of quantum theory (e.g. quantum coherence) and of a newly proposed physical phenomenon of quantum wave function self-collapse(objective reduction: OR -Penrose, 1994) are essential for consciousness, and occur in cytoskeletal microtubules and other structures within each of the brain's neurons. The particular characteristics of microtubules suitable for quantum effects include their crystal-like lattice structure, hollow inner core, organization of cell function and capacity for information processing. We envisage that conformational states of microtubule subunits (tubulins) are coupled to internal quantum events, and cooperatively interact (compute) with other tubulins. We further assume that macroscopic coherent superposition of quantum-coupled tubulin conformational states occurs throughout significant brain volumes and provides the global binding essential to consciousness. We equate the emergence of the microtubule quantum coherence with pre-conscious processing which grows (for up to 500 milliseconds) until the mass-energy difference among the separated states of tubulins reaches a threshold related to quantum gravity. According to the arguments for OR put forth in Penrose (1994), superpositioned states each have their own space-time geometries. When the degree of coherent mass-energy difference leads to sufficient separation of space-time geometry, the system must choose and decay (reduce, collapse) to a single universe state. In this way, a transient superposition of slightly differing space-time geometries persists until an abrupt quantum classical reduction occurs. Unlike the random, subjective reduction(SR, or R) of standard quantum theory caused by observation or environmental entanglement, the OR we propose in microtubules is a self-collapse and it results in particular patterns of microtubule-tubulin conformational states that regulate neuronal activities including synaptic functions. Possibilities and probabilities for post-reduction tubulin states are influenced by factors including attachments of microtubule-associated proteins (MAPs) acting as nodeswhich tune and orchestratethe quantum oscillations. We thus term the self-tuning OR process in microtubules orchestrated objective reduction(B>Orch OR, and calculate an estimate for the number of tubulins (and neurons) whose coherence for relevant time periods (e.g. 500 milliseconds) will elicit Orch OR. In providing a connection among 1) pre-conscious to conscious transition, 2) fundamental space-time notions, 3) non-computability, and 4) binding of various (time scale and spatial) reductions into an instantaneous event (conscious now, we believe Orch OR in brain microtubules is the most specific and plausible model for consciousness yet proposed.
Potential features of quantum computation could explain enigmatic aspects of consciousness. The Penrose—Hameroff model (orchestrated objective reduction: ‘Orch OR’) suggests that quantum superposition and a form of quantum computation occur in microtubules—cylindrical protein lattices of the cell cytoskeleton within the brain's neurons. Microtubules couple to and regulate neural–level synaptic functions, and they may be ideal quantum computers because of dynamical lattice structure, quantum–level subunit states and intermittent isolation from environmental interactions. In addition to its biological setting, the Orch OR proposal differs in an essential way from technologically envisioned quantum computers in which collapse, or reduction to classical output states, is caused by environmental decoherence (hence introducing randomness). In the Orch OR proposal, reduction of microtubule quantum superposition to classical output states occurs by an objective factor: Roger Penrose's quantum gravity threshold stemming from instability in Planck–scale separations (superpositions) in spacetime geometry. Output states following Penrose's objective reduction are neither totally deterministic nor random, but influenced by a non–computable factor ingrained in fundamental spacetime. Taking a modern pan–psychist view in which protoconscious experience and Platonic values are embedded in Planck–scale spin networks, the Orch OR model portrays consciousness as brain activities linked to fundamental ripples in spacetime geometry.
The orchestrated objective reduction (Orch OR) theory, developed by Roger Penrose and Stuart Hameroff, proposes that moments of conscious experience arise from gravity-induced objective reductions (OR) of quantum superpositions orchestrated within neuronal microtubules. This framework has generated substantial empirical interest through its links to microtubule biology, anesthesia sensitivity, and non-computable aspects of understanding. Nevertheless, under standard physicalist assumptions, Orch OR faces persistent metaphysical challenges: an explanatory gap between quantum-physical events and phenomenal feel, risks of strong emergence or dualism, and tensions with the localized actualization demanded by relativistic quantum field theory (QFT). In this paper, we demonstrate that when Orch OR is interpreted through the lens of Phenomenological Absolutism (PA) and Mutual Exclusivity (ME)—a minimalist ontology developed in our recent work (Aoun 2025, 2026a, 2026b)—its core mechanisms are not merely compatible but ontologically fulfilled. PA identifies absolute first-person “is-nesses” (moments of experiential reality, in ME terms) with the localized actualized quantum field configurations required by austere physical realism. OR events thereby become the precise physical echo of transitions acknowledged as and within successive mutually exclusive absolute is-nesses; microtubule “orchestration” corresponds to the internal coherent saturation acknowledged within those is-nesses. The zombie reductio under localized QFT actualization (Aoun 2026b) shows that any separation between physics and phenomenology is incoherent. Consequently, the hard problem dissolves without residue, emergence and bridging concerns are excised, and Orch OR’s commitments to discreteness, non-computability, biological specificity, and gravitational thresholds receive powerful validation. We conclude that the integration of Orch OR with PA and ME yields the most accurate and austere scientific theory of consciousness available—one that honors the original empirical and philosophical motivations while subtracting every unnecessary metaphysical layer.