{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T05:04:57Z","timestamp":1783919097567,"version":"3.55.0"},"reference-count":13,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T00:00:00Z","timestamp":1783900800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Neurol."],"abstract":"<jats:sec>\n                    <jats:title>Background and objective<\/jats:title>\n                    <jats:p>In interictal M\u00e9ni\u00e8re\u2019s disease (MD), a caloric-vHIT dissociation is well established: caloric testing reveals vestibular hypofunction, yet video head impulse test (vHIT) gains in the lateral canal are preserved. Whether this preservation corresponds to preserved functional gaze stabilization remains unknown. This preliminary, exploratory study compared affected and unaffected ear responses of dynamic visual acuity (DVA), functional head impulse test (FHIT), and vHIT in interictal MD, and evaluated the clinical value of each measure.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Eleven interictal MD patients (10 female, 1 male; mean age 61.6\u202f\u00b1\u202f16.7\u202fyears) and 12 inferior vestibular neuritis (IVN) patients (6 female, 6 male; mean age 61.5\u202f\u00b1\u202f9.9\u202fyears) were enrolled. IVN was defined by reduced posterior canal vHIT gain (&amp;lt;0.7) or absent cVEMP on the affected side. All tests were performed during the interictal phase (\u226548\u202fh after the last episode). Six-canal FHIT (correct answer rate, CA%), six-canal vHIT, and DVA were measured. Lesion-side versus intact-side comparisons used the Wilcoxon signed-rank test.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      In MD, lesion-side FHIT-H CA% was significantly lower than intact-side (53.9\u202f\u00b1\u202f33.5% vs. 77.3\u202f\u00b1\u202f26.5%;\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.022), whereas vHIT-H gain (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.146) and DVA (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.820) showed no significant laterality. The FHIT laterality index (25.4\u202f\u00b1\u202f31.4%) significantly exceeded the vHIT-H laterality index (4.2\u202f\u00b1\u202f9.1%;\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.019;\n                      <jats:italic>r<\/jats:italic>\n                      \u202f=\u202f0.71); the FHIT-H abnormality rate was 8\/11 (73%) versus vHIT-H 2\/11 (18%). In IVN, lesion-side posterior canal vHIT gain was significantly reduced (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.027), while FHIT-H showed no laterality (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.413).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>MD and IVN showed contrasting patterns: MD exhibited selective lesion-side FHIT-H reduction with preserved vHIT, whereas IVN showed selective posterior canal vHIT reduction with normal FHIT-H laterality. These findings suggest that FHIT may reflect endolymphatic hydrops-related functional vestibular changes distinct from the structural nerve lesions characteristic of IVN. FHIT may be a useful adjunct for detecting functional vestibular asymmetry in interictal MD; these findings are hypothesis-generating and require replication in larger prospective cohorts.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fneur.2026.1851411","type":"journal-article","created":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T04:24:02Z","timestamp":1783916642000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Functional head impulse test and video head impulse test in interictal M\u00e9ni\u00e8re\u2019s disease and inferior vestibular neuritis: a preliminary comparative study"],"prefix":"10.3389","volume":"17","author":[{"given":"Fumiyuki","family":"Goto","sequence":"first","affiliation":[{"name":"Department of Otolaryngology-Head and Neck Surgery, Tokai University School of Medicine","place":["Isehara, Kanagawa, Japan"]},{"name":"Goto ENT & Dizziness Clinic","place":["Machida, Tokyo, Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yukiko","family":"Tsuda","sequence":"additional","affiliation":[{"name":"Goto ENT & Dizziness Clinic","place":["Machida, Tokyo, Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenji","family":"Okami","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology-Head and Neck Surgery, Tokai University School of Medicine","place":["Isehara, Kanagawa, Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Koichiro","family":"Wasano","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology-Head and Neck Surgery, Tokai University School of Medicine","place":["Isehara, Kanagawa, Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,7,13]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"431","DOI":"10.1007\/s00415-019-09431-9","article-title":"Dissociation of 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(Kaunas)"},{"key":"ref12","doi-asserted-by":"publisher","first-page":"65","DOI":"10.1111\/j.1749-6632.2001.tb03736.x","article-title":"Vestibular histopathology of the human end organ","volume":"942","author":"Rauch","year":"2001","journal-title":"Ann N Y Acad Sci"},{"key":"ref13","doi-asserted-by":"publisher","first-page":"859","DOI":"10.3109\/00016489.2015.1015576","article-title":"What does the dissociation between the results of video head impulse versus caloric testing reveal about the vestibular dysfunction in M\u00e9ni\u00e8re's disease?","volume":"135","author":"McGarvie","year":"2015","journal-title":"Acta Otolaryngol"}],"container-title":["Frontiers in Neurology"],"original-title":[],"link":[{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fneur.2026.1851411\/full","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T04:24:03Z","timestamp":1783916643000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fneur.2026.1851411\/full"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,7,13]]},"references-count":13,"alternative-id":["10.3389\/fneur.2026.1851411"],"URL":"https:\/\/doi.org\/10.3389\/fneur.2026.1851411","relation":{},"ISSN":["1664-2295"],"issn-type":[{"value":"1664-2295","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,7,13]]},"article-number":"1851411"}}