{"title":"健康人的静态颈眼反射。","authors":"Tomoki Ooka, Keiji Honda, Takeshi Tsutsumi","doi":"10.1080/00016489.2023.2201275","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Dynamic cervico- (COR) and vestibulo-ocular reflex (VOR) contribute to stabilise visual images in the retina. The gain in dynamic COR is small in healthy individuals but increases in patients with vestibular dysfunction. Conversely, static COR has not been directly observed in healthy individuals.</p><p><strong>Objectives: </strong>To elucidate the presence of static COR and quantify it in normal individuals in the roll plane.</p><p><strong>Methods: </strong>Eleven healthy participants were included in the study. Eye torsions were measured using video oculography to evaluate the static COR induced by lateral neck flexion during a head-upright-with-body-tilt position at 15°, 30°, and 45°. The ocular counterroll (OCR) was compared during whole-body and head tilts to assess the influence of static COR on OCR.</p><p><strong>Results: </strong>Static COR was significantly observed as eye torsion in the direction opposite to the body tilt. The head tilt OCR was significantly smaller than the whole-body tilt OCR to the right side but not to the left side.</p><p><strong>Conclusion: </strong>Static COR exists in healthy individuals and tends to show higher amplitude as neck flexion stimulation increases.</p>","PeriodicalId":6880,"journal":{"name":"Acta Oto-Laryngologica","volume":"143 5","pages":"387-391"},"PeriodicalIF":1.2000,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Static cervico-ocular reflex in healthy humans.\",\"authors\":\"Tomoki Ooka, Keiji Honda, Takeshi Tsutsumi\",\"doi\":\"10.1080/00016489.2023.2201275\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Dynamic cervico- (COR) and vestibulo-ocular reflex (VOR) contribute to stabilise visual images in the retina. The gain in dynamic COR is small in healthy individuals but increases in patients with vestibular dysfunction. Conversely, static COR has not been directly observed in healthy individuals.</p><p><strong>Objectives: </strong>To elucidate the presence of static COR and quantify it in normal individuals in the roll plane.</p><p><strong>Methods: </strong>Eleven healthy participants were included in the study. Eye torsions were measured using video oculography to evaluate the static COR induced by lateral neck flexion during a head-upright-with-body-tilt position at 15°, 30°, and 45°. The ocular counterroll (OCR) was compared during whole-body and head tilts to assess the influence of static COR on OCR.</p><p><strong>Results: </strong>Static COR was significantly observed as eye torsion in the direction opposite to the body tilt. The head tilt OCR was significantly smaller than the whole-body tilt OCR to the right side but not to the left side.</p><p><strong>Conclusion: </strong>Static COR exists in healthy individuals and tends to show higher amplitude as neck flexion stimulation increases.</p>\",\"PeriodicalId\":6880,\"journal\":{\"name\":\"Acta Oto-Laryngologica\",\"volume\":\"143 5\",\"pages\":\"387-391\"},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2023-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Oto-Laryngologica\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1080/00016489.2023.2201275\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"OTORHINOLARYNGOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Oto-Laryngologica","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1080/00016489.2023.2201275","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"OTORHINOLARYNGOLOGY","Score":null,"Total":0}
Background: Dynamic cervico- (COR) and vestibulo-ocular reflex (VOR) contribute to stabilise visual images in the retina. The gain in dynamic COR is small in healthy individuals but increases in patients with vestibular dysfunction. Conversely, static COR has not been directly observed in healthy individuals.
Objectives: To elucidate the presence of static COR and quantify it in normal individuals in the roll plane.
Methods: Eleven healthy participants were included in the study. Eye torsions were measured using video oculography to evaluate the static COR induced by lateral neck flexion during a head-upright-with-body-tilt position at 15°, 30°, and 45°. The ocular counterroll (OCR) was compared during whole-body and head tilts to assess the influence of static COR on OCR.
Results: Static COR was significantly observed as eye torsion in the direction opposite to the body tilt. The head tilt OCR was significantly smaller than the whole-body tilt OCR to the right side but not to the left side.
Conclusion: Static COR exists in healthy individuals and tends to show higher amplitude as neck flexion stimulation increases.
期刊介绍：
Acta Oto-Laryngologica is a truly international journal for translational otolaryngology and head- and neck surgery. The journal presents cutting-edge papers on clinical practice, clinical research and basic sciences. Acta also bridges the gap between clinical and basic research.
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