{
  "annotation_id": "2ebd29d3-5b8e-4560-8137-e83f6e0dca76",
  "date_created": "2026-03-02T18:01:34.950000Z",
  "date_modified": "2026-03-02T18:01:34.950000Z",
  "file_hash": "db9a4231bf92e73ca3e28a46b64b69fa84ecc64f9ed397aa73f8f28fe32856de",
  "private": false,
  "record": {
    "abstract": "We investigate, both experimentally and theoretically, the bifurcation to\nalternans in heart tissue. Previously, this phenomenon has been modeled either\nas a smooth or as border-collision period-doubling bifurcation. Using a new\nexperimental technique, we find a hybrid behavior: very close to the\nbifurcation point the dynamics are smooth-like, whereas further away they are\nborder-collision-like. This behavior is captured by a new type of model, called\nan unfolded border-collision bifurcation.",
    "arxiv_id": "q-bio/0607019",
    "authors": [
      "Carolyn M. Berger",
      "Xiaopeng Zhao",
      "David G. Schaeffer",
      "Hana M. Dobrovolny",
      "Wanda Krassowska",
      "Daniel J. Gauthier"
    ],
    "categories": [
      "q-bio.TO"
    ],
    "title": "Evidence for an unfolded border-collision bifurcation in paced cardiac   tissue",
    "url": "https://arxiv.org/abs/q-bio/0607019"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f770ad0b-ea4e-44af-8c79-b061ca1a1e3e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}