Bioelectric memory & morphogenetic identity

Gap junctions and bioelectric signals encode body-plan and memory patterns across radical biological transformation.

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Memory persistence through radical embodied transformation12 Gap junctions as consciousness scaling mechanism7 Bioelectric control of planarian head patterning7 Bioelectric code and morphological memory in planarians7 Memory as transferable information substrate5 Planarian memory & regenerative continuity2

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Bridges (12)

Other communities that share members with this one — cross-cutting threads or papers that sit at the seam between two themes.

Bioelectric control of planarian morphogenesis17 shared
Memory persistence through radical embodied transformation12 shared
Memory persistence through insect metamorphosis10 shared
Gap junctions & collective morphogenetic selfhood7 shared
Bioelectric code and morphological memory in planarians7 shared
Gap junctions as consciousness scaling mechanism7 shared
Bioelectric control of planarian head patterning7 shared
Memory as transferable information substrate5 shared
Substrate-independent self & memory plasticity4 shared
Planarian memory & regenerative continuity2 shared
Planaria head/tail patterning stochasticity2 shared
Active inference & free energy minimization1 shared

Findings (34)

Caterpillar Metamorphosis and Memory PersistenceEmpirical demonstration that memories persist through massive brain and body remodeling during metamorphosis, challenging notions of stable Self-substrate binding.
Bioelectric Head Patterning in PlanariaBioelectric gradients regionalize gene expression to determine head structure in planaria; system can be hijacked by microbes to control host head number and morphology.
Bioelectric perturbation permanently alters planarian head number to two-headed or zero-headedManipulation of Vmem via gap junction or ion channel drugs rewrites pattern memory, causing planaria to regenerate with stable, heritable aberrant head numbers.
Caterpillar-to-butterfly memory persistence despite radical brain refactoring
Caterpillar-to-butterfly memory remapping demonstrates that being does not bring specific memories but deep lessons redeployed in new embodiment
Caterpillars retain memories through metamorphosis into butterflies despite drastic brain remodeling.
Cryptic planaria exhibit stochastic but concordant head/tail decisionsBioelectrical disruption produces planaria forming 2-head or 1-head forms at ~70-30 ratio; randomization occurs at population level, but each worm makes unified decision across all tissues.
Cryptic planaria fragments form 1-head and 2-head forms at a set frequency of ~1:2 (Durant et al. 2017)Shows stochastic anatomical outcome at the individual level while all cells in a fragment agree on one morphology.
Gap junction blockade stochastically induces heads of other planarian species in genetically wild-type worms.Temporary disruption of gap junctions causes planaria to reconstruct heads appropriate to other species, revealing latent morphospace attractors.
Gap junctions enable 'mind meld' through impossibility of information hiding
General anesthetics are gap junction blockers.Gap junction blockers function as anesthetics across plants, Hydra, and humans, consistent with GJs being critical for high-level Self maintenance.
General anesthetics block gap junctions across plants, Hydra, and humansGap junction blockers induce loss of consciousness in diverse organisms, supporting the bioelectric network hypothesis of the Self.
Identity persistence through metamorphosis
In planaria, the most depolarized region becomes the head; altering bioelectric pattern changes head location and number (Beane et al. 2011, Durant et al. 2017)The collective interprets relative voltage differences, not absolute values, to decide anterior identity.
Insect larvae retain memories through complete brain remodeling during metamorphosis to adult form.Shows that identity and cognitive continuity persist despite radical neural substrate change.
Learned behavior memories persist through brain metamorphosis in insects.Caterpillars that learn a behavior retain it as adults despite brain being drastically remodelled, showing memory mapping across substrates.
Manipulation of resting potential pattern in planaria stably alters target morphology (head number) despite wild-type genetics.Transient bioelectric perturbation with ion channel drugs/RNAi permanently alters the number of heads regenerated even in subsequent rounds without further treatment, demonstrating bioelectric pattern memory.
Memory Persistence Through Metamorphosis Despite Brain Reconstruction
Memory remapping across bodies and contexts
Memory retention in planarian tail fragment regeneration
Memory Transfer Across MetamorphosisEmpirical observation that caterpillars retain learned memories through pupation despite radical brain refactoring, suggesting memory as salience rather than fidelity.
Memory transfer via brain extracts in AplysiaDavid Glanzman's experiments show trained Aplysia brain extracts, injected into naïve subjects, enable the recipient to extract meaning and modify behavior; demonstrates remapping independent of precise placement.
Modification of cell-cell communication during planarian regeneration causes genetically-normal fragments to produce heads appropriate to other species (Emmons-Bell et al. 2015, Sullivan et al. 2016)Shows that morphological attractors can be switched via physiological cues, revealing the navigation of morphospace by collectives.
Permanent two-headed planarians created by manipulating bioelectric circuits.From Oviedo et al. (2010) and Durant et al. (2017), shows memory of anatomical set points beyond genomic default.
Planaria exposed to barium regenerate heads insensitive to barium via limited transcriptional changesDespite no evolutionary exposure to barium, planaria solve the physiological stressor by regulating a small set of genes, demonstrating problem-solving in transcriptional space.
Planaria retain conditioned responses after complete brain regenerationWorms trained before decapitation re-acquire the memory after regenerating a new brain, showing transfer of information across tissues.
Planarian Brain Regeneration with Memory RetentionEmpirical finding that planaria tail fragments retain learned information and imprint memories onto newly regenerated brains.
Planarian fragments regenerate with near 100% fidelity of anatomical structurePlanarians cut into pieces regenerate precisely what is missing and re-scale tissue to form complete worms.
Planarian fragments regenerating from bioelectrically re-patterned tissue produce permanent two-headed phenotype, demonstrating transient bioelectric states can produce lasting morphological memory changes.Key evidence that morphogenetic memories are stored in bioelectric circuits and are rewritable via transient voltage state modifications; memory persists across multiple regeneration cycles.
Planarian memory persistence across head regeneration
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Claims (8)

Gap junctional coupling wipes ownership information on signaling molecules, enabling the formation of multicellular Selves.Because cells cannot distinguish internally generated signals from those arriving through GJs, they share memories and bind into a larger agent.
General anesthesia works by blocking gap junctions, thereby dissolving the higher-level Self while leaving individual cells functional.Suggests that the unified self emerges from bioelectrical network coherence, which can be reversibly disrupted.
General anesthetics are gap junction blockers, consistent with the role of gap junctions in scaling consciousness.Links anesthesia mechanism to the bioelectric binding model of higher-level Selves.
Memories are messages between agents separated across time; each engram is a stigmergic note left by a past version of self
Memories are not immutable markers of identity; they can be transferred between individuals and remapped onto new substrates.Evidence from planarian tail fragment training and metamorphosis suggests memory is substrate-independent process.
Memories as messages between temporal agentsLevin proposes viewing memories as stigmergic notes left by past Selflets; parallelizes vertical (temporal) communication with horizontal (social) communication.
Memory is a candidate invariant that enables a Self to persist despite drastic alterations of substrate.Memory transfer across tissues and through metamorphosis supports persistence of Self.
Salience preservation over fidelity in memory