# Aldehyde-Based Cryopreservation **Entity class:** Brain-preservation method **Collections:** [[collections/Neurotech|Neurotech]] · [[collections/Consciousness Continuity|Consciousness Continuity]] ## Definition **Aldehyde-Based Cryopreservation** is whole-organ preservation using aldehyde fixation combined with cryoprotectant equilibration and low-temperature storage. ## Relationships - **Technical relationship:** It relates to [[wiki/Aldehyde-Stabilized Cryopreservation|Aldehyde-Stabilized Cryopreservation]], [[wiki/Substrate Capture|Substrate Capture]], and [[wiki/Memory Substrate|Memory Substrate]] while keeping ultrastructural preservation distinct from demonstrated recoverability. - **Canonical source:** [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]]. - **Collection relationship:** The entry belongs to [[collections/Neurotech|Neurotech]] and the person-scale persistence questions maintained by [[collections/Consciousness Continuity|Consciousness Continuity]]. <!-- BEGIN HUMANIZED RELATIONSHIPS 2026-09-11 --> This entry's documented connections are expressed in its definition and related-work routes, with provenance retained in the source-linked material. <!-- END HUMANIZED RELATIONSHIPS 2026-09-11 --> ## Epistemic boundary Inclusion in the continuity stack records a documented component, method, model, or analytic distinction; it leaves whole-person transfer, subjective continuity, or numerical identity unresolved. ## Related Work in the Corpus <!-- BEGIN HUMANIZED CORPUS ROUTES 2026-09-11 --> - In [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]], **I. The week the future became a specification** provides the narrative context for **Aldehyde-Based Cryopreservation**: In August 2026, PLOS One published the first characterized protocol for aldehyde-based cryopreservation of whole human brains, using graded immersion cryoprotection to a final solution of fifty percent ethylene glycol and thirty… <!-- END HUMANIZED CORPUS ROUTES 2026-09-11 --> ## Research Inference Attractors <!-- BEGIN DEEP INFERENCE ATTRACTORS 2026-09-11 --> These are secondary semantic placements for the inference attractor network. Each statement keeps its original ID and tier; its canonical cluster page links back to every destination. Source register: [[research/Research Inferences|Research Inferences]]. Interpretive context: [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]] and [[articles/Mind Uploading and AI — The Host is Reusable and the Person is the Delta|Mind Uploading and AI — The Host is Reusable and the Person is the Delta]]. Collection route: [[collections/Neurotech|Neurotech]]. - **INF-0449 — Unresolved.** Whether a given preservation preserves enough is testable in animals by preserving, scanning, emulating, and comparing against pre-preservation behavior. That experiment is fundable today at small-animal scale and would settle the field's central question empirically. - **Canonical cluster:** [[wiki/Brain Preservation|Brain Preservation]] <!-- END DEEP INFERENCE ATTRACTORS 2026-09-11 -->