# BrainEx: a crucial result with a crucial boundary Animal tissue research. In 2019, Vrselja and colleagues reported restoration and maintenance of microcirculation and selected molecular and cellular functions ex vivo in isolated pig brains, with the intervention beginning four hours post mortem. They observed findings including active metabolism and spontaneous synaptic activity, without global electrocorticographic activity. This study challenged simple assumptions about how quickly every cellular process becomes unrecoverable under those experimental conditions. Canonical page: https://givegigs.com/wiki/necro-chapter-brainex Last updated: 2026-11-09T18:58:11.921Z Parent topic: [necromancer-neuroscience](https://givegigs.com/wiki/necromancer-neuroscience) ## Contents - [Overview](#wiki-section-overview-1) - [Chapter notes](#wiki-section-chapter-notes-2) - [Dossier section](#wiki-section-dossier-link-3) ## Overview Animal tissue research. This page expands the “BrainEx: a crucial result with a crucial boundary” chapter in the neuroscience collection. ## Chapter notes In 2019, Vrselja and colleagues reported restoration and maintenance of microcirculation and selected molecular and cellular functions ex vivo in isolated pig brains, with the intervention beginning four hours post mortem. They observed findings including active metabolism and spontaneous synaptic activity, without global electrocorticographic activity. This study challenged simple assumptions about how quickly every cellular process becomes unrecoverable under those experimental conditions. The same paper does not show that a conscious pig was revived, that memories returned, or that an individual survived. Its preparation, endpoints, and postmortem interval define the result. Four hours in a controlled experiment cannot be extrapolated mutatis mutandis into years of decomposition, an intact recovered organism, or the reversal of properly diagnosed human brain death. Cellular recoverability and person-level recovery remain different questions. The proposed lesson for Necromancer is methodological: distinguish what remains biologically recoverable from what has actually been lost. A future program would need to establish the condition of tissue, the scope of any recovery, and the limits of the model. The result would remain valuable even if it only improves understanding of injury and preservation rather than leading toward the founding ambition. ## Dossier section [Open this exact section in the Necromancer dossier](/necromancer#brainex). The original chapter status is “Animal tissue research.” ## Sources - [Restoration of brain circulation and cellular functions hours post-mortem](https://pubmed.ncbi.nlm.nih.gov/30996318/) - [Pediatric and Adult Brain Death/Death by Neurologic Criteria Consensus Guideline](https://pubmed.ncbi.nlm.nih.gov/37821233/) --- This article is collaboratively maintained. Check the canonical page and cited sources for the latest context.