{
  "oags": "0.2",
  "status": "alpha",
  "entry": {
    "id": "IB-physarum-tube-memory",
    "type": "evidence",
    "claim": "Physarum polycephalum encodes the location of a past nutrient stimulus in its tube-diameter hierarchy: tubes toward the food dilate and the diameter pattern persists after the stimulus itself is gone.",
    "evidence_grade": "E2",
    "state": "verified",
    "primary_source_ref": [
      "Kramar & Alim 2021, PNAS"
    ],
    "quantities": "imprint outlasts the consumed stimulus; carried by a softening agent (chemically unidentified; ATP candidate) advected on the Ca2+-driven shuttle-streaming flow"
  },
  "expand": [
    {
      "rel": "relates",
      "target": "IB-corvid-durable-memory",
      "href": "https://infoblock.org/b/IB-corvid-durable-memory/oags.json"
    },
    {
      "rel": "relates",
      "target": "IB-physarum-extended-memory",
      "href": "https://infoblock.org/b/IB-physarum-extended-memory/oags.json"
    }
  ],
  "incoming": [
    {
      "rel": "relates",
      "from": "IB-corvid-durable-memory",
      "href": "https://infoblock.org/b/IB-corvid-durable-memory/oags.json"
    },
    {
      "rel": "relates",
      "from": "IB-physarum-extended-memory",
      "href": "https://infoblock.org/b/IB-physarum-extended-memory/oags.json"
    }
  ],
  "links": [
    "https://infoblock.org/b/IB-corvid-durable-memory/",
    "https://infoblock.org/b/IB-physarum-extended-memory/",
    "https://infoblock.org/b/IB-corvid-durable-memory/",
    "https://infoblock.org/b/IB-physarum-extended-memory/"
  ],
  "declared_losses": [
    "Public evidence-graph projection: internal analytic/theory edges and private provenance are withheld by design (empirics-only surface).",
    "Alpha: some primary-source refs are pending precise citation verification."
  ],
  "generated": "2026-07-30"
}