{
  "annotation_id": "3ea525ae-f893-4055-8a87-2e317e7c926b",
  "date_created": "2026-03-02T18:01:31.083000Z",
  "date_modified": "2026-03-02T18:01:31.083000Z",
  "file_hash": "47aac29ee969c77620253ddb542a541f500cec9dd7b58c1fbc881cd528ff4d53",
  "private": false,
  "record": {
    "abstract": "An analysis of the RR-interval time series, $t_i$, is presented for the case\nin which the average time, $\\bar{t}$, changes slowly. In particular, $\\bar{t}$\nand a short-time scale variability parameter, $V$, are simultaneously measured\nwhile $\\bar{t}$ decreases for subjects in the reclined position. The initial\ndecrease in $\\bar{t}$ is usually linear with $V$ yielding parameters that can\nbe related to physiological quantities.",
    "arxiv_id": "q-bio/0410010",
    "authors": [
      "P. B. Siegel",
      "J. Sperber",
      "W. Kindermann",
      "A. Urhausen"
    ],
    "categories": [
      "q-bio.QM"
    ],
    "title": "Nonstationary time series analysis of heart rate variability",
    "url": "https://arxiv.org/abs/q-bio/0410010"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "401b3991-6f03-428f-b788-c87a647d114a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}