{"title":"The saccule and gravity.","authors":"Hiroaki Ichijo, Hisako Ichijo","doi":"10.1017/S0022215125102600","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>The important role of the saccule is the sensing of gravity. In other words, gravity always stimulates the macula of the saccule.</p><p><strong>Objectives: </strong>The aim of this study was to clarify whether nystagmus and dizziness occur by intentional changes upon stimulation to the saccules.</p><p><strong>Methods: </strong>The subjects were eight healthy humans. Experiment 1: Subjects were asked to maintain a supine position to check for nystagmus and dizziness. Experiment 2: Subjects were asked to tilt their heads 45º to the left in the supine position to check for nystagmus and dizziness. Experiment 3: Subjects were asked to maintain a left-ear-down 90º position to check for nystagmus and dizziness.</p><p><strong>Results: </strong>In all the experiments, no one revealed nystagmus and no one complained of dizziness.</p><p><strong>Conclusion: </strong>Neither nystagmus nor dizziness occurs by intentional changes in the stimulation to the saccules.</p>","PeriodicalId":16293,"journal":{"name":"Journal of Laryngology and Otology","volume":" ","pages":"1-5"},"PeriodicalIF":1.1000,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Laryngology and Otology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1017/S0022215125102600","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"OTORHINOLARYNGOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Background: The important role of the saccule is the sensing of gravity. In other words, gravity always stimulates the macula of the saccule.
Objectives: The aim of this study was to clarify whether nystagmus and dizziness occur by intentional changes upon stimulation to the saccules.
Methods: The subjects were eight healthy humans. Experiment 1: Subjects were asked to maintain a supine position to check for nystagmus and dizziness. Experiment 2: Subjects were asked to tilt their heads 45º to the left in the supine position to check for nystagmus and dizziness. Experiment 3: Subjects were asked to maintain a left-ear-down 90º position to check for nystagmus and dizziness.
Results: In all the experiments, no one revealed nystagmus and no one complained of dizziness.
Conclusion: Neither nystagmus nor dizziness occurs by intentional changes in the stimulation to the saccules.
期刊介绍：
The Journal of Laryngology & Otology (JLO) is a leading, monthly journal containing original scientific articles and clinical records in otology, rhinology, laryngology and related specialties. Founded in 1887, JLO is absorbing reading for ENT specialists and trainees. The journal has an international outlook with contributions from around the world, relevant to all specialists in this area regardless of the country in which they practise. JLO contains main articles (original, review and historical), case reports and short reports as well as radiology, pathology or oncology in focus, a selection of abstracts, book reviews, letters to the editor, general notes and calendar, operative surgery techniques, and occasional supplements. It is fully illustrated and has become a definitive reference source in this fast-moving subject area. Published monthly an annual subscription is excellent value for money. Included in the subscription is access to the JLO interactive web site with searchable abstract database of the journal archive back to 1887.
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