{
  "annotation_id": "ca78bfe5-ac16-4891-92b6-d414bf07e542",
  "date_created": "2026-03-02T18:01:31.488000Z",
  "date_modified": "2026-03-02T18:01:31.488000Z",
  "file_hash": "269c6d0d5cd5ea2faed437204c134c0fda4f2505b59ab0c1bfeec09aa85a45f8",
  "private": false,
  "record": {
    "abstract": "We demonstrate the robust scale-invariance in the probability density\nfunction (PDF) of detrended healthy human heart rate increments, which is\npreserved not only in a quiescent condition, but also in a dynamic state where\nthe mean level of heart rate is dramatically changing. This scale-independent\nand fractal structure is markedly different from the scale-dependent PDF\nevolution observed in a turbulent-like, cascade heart rate model. These results\nstrongly support the view that healthy human heart rate is controlled to\nconverge continually to a critical state.",
    "arxiv_id": "q-bio/0409039",
    "authors": [
      "Ken Kiyono",
      "Zbigniew R. Struzik",
      "Naoko Aoyagi",
      "Seiichiro Sakata",
      "Junichiro Hayano",
      "Yoshiharu Yamamoto"
    ],
    "categories": [
      "q-bio.TO"
    ],
    "doi": "10.1103/PhysRevLett.93.178103",
    "title": "Critical Scale-invariance in Healthy Human Heart Rate",
    "url": "https://arxiv.org/abs/q-bio/0409039"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "85135bbd-a79d-4b8d-a353-81001b66c235",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}