{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T05:10:44Z","timestamp":1778562644275,"version":"3.51.4"},"reference-count":12,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T00:00:00Z","timestamp":1777939200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This Technical Report presents a quantitative signal processing approach to analyze and correct eye drift during vestibulo-ocular reflex (VOR) measurements using the video Head Impulse Test (vHIT). The objective is to determine the extent of drift caused by goggle slippage\u2014a technical artifact that can distort the VOR gain index. A total of 57 impulses were categorized into three protocols: Lateral, LARP, and RALP. For each impulse, peak head velocity and eye drift (estimated from the average velocity during the pre- and post-impulse rest periods) were extracted using a custom signal processing pipeline implemented in MATLAB R2020b and Python 3.11 64 bit. Results showed the highest drift in the RALP group (\u22127.41 deg\/s) and the lowest in the LARP group (\u22123.08 deg\/s). The correlation between head velocity and drift was most prominent in the RALP group (r &gt; 0.7), highlighting the impact of stimulation direction on goggle stability. This study proposes a drift detection method to be integrated into VOR correction algorithms, thereby enhancing gain analysis and saccade detection in automated systems.<\/jats:p>","DOI":"10.3390\/s26092880","type":"journal-article","created":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T10:01:30Z","timestamp":1777975290000},"page":"2880","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Eye Drift Signal Analysis Caused by Goggle Slippage in vHIT Measurements: A Signal Processing Perspective"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-5757-5167","authenticated-orcid":false,"given":"Ha Ngoc","family":"Khoan","sequence":"first","affiliation":[{"name":"Cyclotron Centre, 108 Military Central Hospital, Hanoi 100000, Vietnam"},{"name":"Academy of Military Science and Technology, Hanoi 100000, Vietnam"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Le Ky","family":"Bien","sequence":"additional","affiliation":[{"name":"Academy of Military Science and Technology, Hanoi 100000, Vietnam"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-3760-6607","authenticated-orcid":false,"given":"Tran Thi","family":"Nhan","sequence":"additional","affiliation":[{"name":"Faculty of New Energy, Electric Power University, Hanoi 100000, Vietnam"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0446-6302","authenticated-orcid":false,"given":"Tran Van","family":"Nghia","sequence":"additional","affiliation":[{"name":"Air Force\u2013Air Defense Technical Institute, Hanoi 100000, Vietnam"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1097\/MAO.0000000000001233","article-title":"Effect of goggle slippage on the video head impulse test outcome and its mechanisms","volume":"38","author":"Suh","year":"2017","journal-title":"Otol. Neurotol."},{"key":"ref_2","first-page":"3251","article-title":"Comparison of Three Video Head Impulse Test Systems for the Diagnosis of Bilateral Vestibulopathy","volume":"267","author":"Starkov","year":"2020","journal-title":"J. Neurol."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Halmagyi, G.M., Chen, L., MacDougall, H.G., Weber, K.P., McGarvie, L.A., and Curthoys, I.S. (2017). The video head impulse test. Front. Neurol., 8.","DOI":"10.3389\/fneur.2017.00258"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Yip, C.W., Glaser, M., Frenzel, C., Bayer, O., and Strupp, M. (2016). Comparison of the bedside head-impulse test with the video head-impulse test in a clinical practice setting: A prospective study of 500 outpatients. Front. 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Neurophysiol."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/26\/9\/2880\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T04:24:37Z","timestamp":1778559877000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/26\/9\/2880"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,5,5]]},"references-count":12,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2026,5]]}},"alternative-id":["s26092880"],"URL":"https:\/\/doi.org\/10.3390\/s26092880","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,5,5]]}}}