finding
active
finding:planaria-exposed-to-barium-regenerate-heads-insensitive-to-barium-via-limited-transcriptional-changesPlanaria exposed to barium regenerate heads insensitive to barium via limited transcriptional changes
Despite no evolutionary exposure to barium, planaria solve the physiological stressor by regulating a small set of genes, demonstrating problem-solving in transcriptional space.
Source paper
extracted_from(2022) · Michael Levin
Neighborhood — ranked by edge-count
Claims (2)
claim
- Frames developmental biology as an instance of basal cognition.
- Expands the definition of intelligence to include non-behavioral problem-solving, enabling comparison across diverse substrates.
Communities (3)
community
- Gap junctions and bioelectric signals encode body-plan and memory patterns across radical biological transformation.
- Transient bioelectric manipulation persistently alters head number and patterning despite wild-type genetics in planaria.
- Studies of how ion channel bioelectric patterns encode anatomical information independent of genetics, enabling regeneration fidelity and behavioral memory preservation across complete body regeneration.
Methods (1)
method
- Gene expression profiling used to study how cells solve physiological stressors in transcriptional space (e.g., barium planaria).
Concepts (2)
concept
- Intelligence is defined as competency in navigating any problem space (3D, transcriptional, morphospace), not just behavior in 3D world.
- Transcriptional spacesupportsA space of gene expression states in which cells solve physiological problems.
Related by similarity (8)
cosine ≥ 0.65 · no typed edgeEntities in the same semantic neighborhood but without a typed relation to this one — candidates for new edges or unrecognized duplicates.
- From Emmons-Bell et al. 2019; demonstrates physiological problem-solving in a novel stressor, no selection history.
- Planaria maintain memories and re-imprint them from tail fragments onto newly regenerating brains.finding0.822Example of memory dynamics during extreme regeneration.
- Worms trained before decapitation re-acquire the memory after regenerating a new brain, showing transfer of information across tissues.
- Planarians derived from tail fragments of trained worms retain original information after brain regenerationfinding0.777Behavioral memories in planaria persist through complete brain regeneration, indicating movement of memory across tissues.
- Transient perturbation of bioelectric states produces stable two-headed planaria that regenerate truefinding0.770Manipulating gap junctions or ion channels can permanently alter the target morphology in planaria, resulting in two-headed animals that regenerate two heads without further intervention.
- Planarians cut into pieces regenerate precisely what is missing and re-scale tissue to form complete worms.
- The collective interprets relative voltage differences, not absolute values, to decide anterior identity.
- Evidence that memory and anatomical form are tightly linked; information processing enables integration of behavioral and morphological change.