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Old theory, new evidence: inhalational anesthetics disrupt a collective quantum state of intraneuronal microtubules to cause unconsciousness

Michael C. Wiest · 2025

AI-verified citationSRC-WIEST-2025A
identifier / locator
doi:10.4103/mgr.MEDGASRES-D-25-00111
url
https://pmc.ncbi.nlm.nih.gov/articles/PMC12413878/
verification note
text retrieved and shown to the drafter on 2026-09-11 (run 2026-09-11-draft-orch-or-115454); passages checked by the verify verb
reliability notes
  • Short opinion/commentary piece in Medical Gas Research 16(2):182–183, not a systematic review; read via PMC full text (PMC12413878).
  • Proponent statement by the author of the epothilone-B rat study; secondary throughout, characterising other groups' primaries.
  • Its reference list contains no mention of the contradictory Li et al. 2025 mouse study, epothilone D or vinblastine.

Evidence drawn from this source

Context· weakORCH-E081

A quantum-yield measurement becomes 'definitive biophysical evidence' in one step — part 1

what the source states
Since the 1990s, decoherence has been the primary objection to the hypothesis: "the vulnerability of macroscopic quantum states to decoherence at body temperature" was the main reason it was considered implausible.
what we infer
My inference: this is the absorb-not-score pattern ORCH-E035 describes, visible in a single step. A fluorescence quantum-yield measurement plus a non-Hermitian radiative model is presented as settling room-temperature quantum optical effects, with the dephasing question — the one that makes ORCH-C010 unresolved — not raised. It is an assertion, not evidence, and carries no weight for the truth of ORCH-C010.
limitations
  • Opinion piece; secondary characterization of SRC-BABCOCK-2024.
  • Zero diagnosticity as evidence.
Context· weakORCH-E082

A quantum-yield measurement becomes 'definitive biophysical evidence' in one step — part 2

what the source states
There is now "definitive biophysical evidence that MTs support quantum optical effects" at room temperature, citing the 2024 ultraviolet superradiance paper by Babcock et al.
what we infer
My inference: this is the absorb-not-score pattern ORCH-E035 describes, visible in a single step. A fluorescence quantum-yield measurement plus a non-Hermitian radiative model is presented as settling room-temperature quantum optical effects, with the dephasing question — the one that makes ORCH-C010 unresolved — not raised. It is an assertion, not evidence, and carries no weight for the truth of ORCH-C010.
limitations
  • Opinion piece; secondary characterization of SRC-BABCOCK-2024.
  • Zero diagnosticity as evidence.
Context· weakORCH-E083

A quantum-yield measurement becomes 'definitive biophysical evidence' in one step — part 3

what the source states
Those quantum effects "get stronger as the MTs are joined into larger structures" rather than weaker.
what we infer
My inference: this is the absorb-not-score pattern ORCH-E035 describes, visible in a single step. A fluorescence quantum-yield measurement plus a non-Hermitian radiative model is presented as settling room-temperature quantum optical effects, with the dephasing question — the one that makes ORCH-C010 unresolved — not raised. It is an assertion, not evidence, and carries no weight for the truth of ORCH-C010.
limitations
  • Opinion piece; secondary characterization of SRC-BABCOCK-2024.
  • Zero diagnosticity as evidence.
Context· weakORCH-E084

The proponents' strongest unanswered point: Meyer–Overton from tubulin quantum chemistry — part 1

what the source states
A detailed quantum chemical modeling study found that "the potencies of several volatile anesthetics were predicted by their binding affinity" to delocalized electron sites within the tubulin subunits that make up microtubules.
what we infer
This is the argument with real force in the proponent case and the direct motivation for ORCH-R009; it is recorded as an assertion in a commentary, whose underlying computation is already at ORCH-E010 with weak strength.
limitations
  • Secondary; the primary (SRC-CRADDOCK-2017) is computational and already in the ledger at weak strength.
  • The uniqueness claim ('no other candidate target') is asserted, not demonstrated, and no survey is cited.
  • Direction set to "context" (from "supports") by the second reader (claude-sonnet-5, 2026-09-11, run 2026-09-11-verify-orch-or-120610, verify-v6) at intake: The quote is accurate and correctly attributed to Wiest's summary of the Craddock et al. 2017 study, and the locator is right, but Wiest's article is merely citing/reporting another paper's finding rather than presenting it as the reviewing author's own retrieved result; per the rule that a citation to an unretrieved study is context rather than direct support, the direction should be 'context' not 'supports.' The record itself acknowledges this secondary status in its limitations, so independence is properly noted.
Context· weakORCH-E085

The proponents' strongest unanswered point: Meyer–Overton from tubulin quantum chemistry — part 2

what the source states
These theoretical results "essentially reproduce the Meyer-Overton correlation" by assuming that inhalational anesthesia is primarily mediated by microtubules.
what we infer
This is the argument with real force in the proponent case and the direct motivation for ORCH-R009; it is recorded as an assertion in a commentary, whose underlying computation is already at ORCH-E010 with weak strength.
limitations
  • Secondary; the primary (SRC-CRADDOCK-2017) is computational and already in the ledger at weak strength.
  • The uniqueness claim ('no other candidate target') is asserted, not demonstrated, and no survey is cited.
  • Direction set to "context" (from "supports") by the second reader (claude-sonnet-5, 2026-09-11, run 2026-09-11-verify-orch-or-120610, verify-v6) at intake: The quoted passage is Wiest's own characterization of a separate study (Craddock et al. 2017) rather than a primary finding of his; per the rule that a citation of another work is not itself evidence of what that work found, this secondary retelling should be treated as context toward ORCH-C011 rather than as direct support, even though the record's limitations already flag the secondary/independence issue appropriately.
Context· weakORCH-E086

The proponents' strongest unanswered point: Meyer–Overton from tubulin quantum chemistry — part 3

what the source states
Reproducing the Meyer-Overton correlation from an assumed primary target "cannot be said for any other candidate molecular target."
what we infer
This is the argument with real force in the proponent case and the direct motivation for ORCH-R009; it is recorded as an assertion in a commentary, whose underlying computation is already at ORCH-E010 with weak strength.
limitations
  • Secondary; the primary (SRC-CRADDOCK-2017) is computational and already in the ledger at weak strength.
  • The uniqueness claim ('no other candidate target') is asserted, not demonstrated, and no survey is cited.
  • Direction set to "context" (from "supports") by the second reader (claude-sonnet-5, 2026-09-11, run 2026-09-11-verify-orch-or-120610, verify-v6) at intake: The quoted line is a comparative uniqueness claim about which target best reproduces Meyer-Overton via modeling, not a direct assertion that anesthetic binding alters tubulin's electronic/optical behavior; it bears on the broader MT-primacy argument rather than directly on ORCH-C011's specific mechanistic claim, so it functions as context rather than direct support. The quote is accurately drawn from the body text and the secondary/derivative relationship to the Craddock modeling study is properly disclosed.