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The present study examines the association between HRV and interoceptive sensibility among individuals with anorexia nervosa and atypical anorexia (i.e., Anorexia Nervosa Spectrum Disorders) in real\u2010time using a combination of biosensor and ecological momentary assessment data.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>Seventy\u2010five adults with Anorexia Nervosa Spectrum Disorders and current or lifetime suicidality completed 21\u2009days of ecological momentary assessment while wearing a sensor band that passively collected HRV data. Multilevel models examined the association between HRV and interoceptive sensibility at the within\u2010 and between\u2010person levels.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>HRV was positively associated with interoceptive sensibility at the between\u2010person level, such that individuals with higher HRV demonstrated greater interoceptive sensibility. However, temporary changes in HRV (i.e., deviations from one's average) were not associated with corresponding changes in interoceptive sensibility.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion<\/jats:title>\n                    <jats:p>Within Anorexia Nervosa Spectrum Disorders with co\u2010occurring suicidality, alterations in autonomic function are accompanied by differences in interoceptive sensibility at the trait, but not state, level. Both heightened HRV and irregularities in interoceptive sensibility may arise as a consequence of prolonged caloric restriction. Physiological processes distinct from HRV may be responsible for driving momentary fluctuations in interoceptive sensibility in this population. Further research is needed to continue parsing potential differences in physiological processes across specific diagnoses and illness stage.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/eat.70194","type":"journal-article","created":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T09:06:46Z","timestamp":1787130406000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Relationship Between Heart Rate Variability and Interoception in Anorexia Nervosa Spectrum Disorders"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6755-3396","authenticated-orcid":false,"given":"Lauren M.","family":"Harris","sequence":"first","affiliation":[{"name":"Department of Psychological Sciences Auburn University  Auburn Alabama USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4621-2944","authenticated-orcid":false,"given":"Rachel","family":"Torres","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7638-2354","authenticated-orcid":false,"given":"Madison","family":"Hooper","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4148-6927","authenticated-orcid":false,"given":"Elizabeth D.","family":"Cash","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"},{"name":"Department of Otolaryngology, Head and Neck Surgery &amp; Communication Disorders University of Louisville School of Medicine  Louisville Kentucky USA"},{"name":"Brown Cancer Center University of Louisville  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2359-5206","authenticated-orcid":false,"given":"Cheri A.","family":"Levinson","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"},{"name":"Department of Pediatrics, Division of Child and Adolescent Psychiatry and Psychology University of Louisville School of Medicine  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-8758-7685","authenticated-orcid":false,"given":"April R.","family":"Smith","sequence":"additional","affiliation":[{"name":"Department of Psychological Sciences Auburn University  Auburn Alabama USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,8,19]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.biopsycho.2018.09.006"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1503\/jpn.140217"},{"key":"e_1_2_12_4_1","doi-asserted-by":"crossref","DOI":"10.1176\/appi.books.9780890425596","volume-title":"Diagnostic and Statistical Manual of Mental Disorders: DSM\u20105","author":"American Psychiatric Association","year":"2013"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1037\/1089\u20102680.10.3.229"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1001\/archgenpsychiatry.2011.74"},{"key":"e_1_2_12_7_1","doi-asserted-by":"crossref","unstructured":"Bakdash J. 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