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カイダ ケンイチ
KAIDA Kenichi
海田 賢一 所属 埼玉医科大学 医学部 総合医療センター 脳神経内科 職種 教授 |
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| 論文種別 | 学術雑誌(原著) |
| 言語種別 | 英語 |
| 査読の有無 | 査読あり |
| 表題 | Visual influence on the magnitude of somatogravic illusion evoked on advanced spatial disorientation demonstrator |
| 掲載誌名 | 正式名：Aviation Space and Environmental Medicine ISSNコード：00956562 |
| 巻・号・頁 | 69(2),111-116頁 |
| 著者・共著者 | Osamu Tokumaru,Kenichi Kaida,Hiroshi Ashida,Chieko Mizumoto,Jiro Tatsuno |
| 発行年月 | 1998/02 |
| 概要 | Background: The somatogravic illusion (SGI) is a kind of spatial disorientation caused by a linear sustained acceleration. Pilots believe that visual cues, such as a visible horizon or texture flow, reduce this illusion. This study was performed to evaluate the influence of visual stimuli on the SGI using the Advanced Spatial Disorientation Demonstrator (ASDD). Methods: There were eight healthy males who were exposed to a 0.58 g x axis linear acceleration on the ASDD, where the direction of the resultant gravitoinertial force was equivalent to 30°pitch-up. One of the following visual stimuli was presented during each acceleration: BLANK (no visual cues) HORIZON (a visible horizon without motion) and TEXTURE (vertical lines moving toward the subject evoking vection). The subjective magnitude of the SGI in ordinal scale was observed and in interval scale, the deviation of the moving point kept at the subjective horizon was observed. The differences among visual stimuli were analyzed. Results: The subjective magnitude of the SGI (p< 0.01) and the deviation of the moving point (p< 0.05) were significantly smaller in HORIZON than in BLANK and TEXTURE. No difference was demon |
| PMID | 9491247 |