頁籤選單縮合
題名 | APRL動作對科氏錯覺後效作用之影響=The Influence of APRL Maneuver on the Residual Effect of Coriolis Illusion |
---|---|
作者 | 陳建良; 洪啟庭; 郭博昭; 林昱廷; 龍佛衛; 孫千媚; 溫德生; | 書刊名 | 中華民國航空醫學暨科學期刊 |
卷期 | 21:2 2007.12[民96.12] |
頁次 | 頁95-104 |
分類號 | 412.85 |
關鍵詞 | 空間迷向; 科里爾氏錯覺; APRL動作; 前庭-眼反射; Spatial disorientation; Coriolis illusion; APRL maneuver; Vestibulo-ocular reflex; |
語文 | 中文(Chinese) |
中文摘要 | 飛行中的空間迷向以科里爾氏錯覺最危險。它涉及在角加速度環境作頭部偏離水平面的動作,導致兩個以上的半規管同時受到加、減速度的刺激,甚至引發眼振。它一旦發生常使飛行員失能,故稱為壓倒性的空間迷向。過去作者研發出一種腹式喊叫動作,藉興奮大腦皮質以修飾上行性神經傳入訊號來縮短迷向的持續時間。本研究為繼續探討APRL動作對暴露於科氏力之後效作用,從記錄腦電波圖(EEG)、眼振圖(EOG)和視覺敏銳度來確認該動作的效果。18男,3女(21~37歲)參與DISO空間迷向模擬機的載,錯覺的誘導方式為當DISO旋轉至30 rpm後,受試者聞指令俯首和向左轉身撥桿,俟平身即喊叫三聲(實驗組)或不喊叫(對照組),最後開始閱讀視力卡;於其間。同步記錄EEG和EOG的變化,事後各別以平均波頻(MPF)和眼波圖積分(QEOG)予以定量,並著重於完成APRL動作後1~5秒鐘的變化。本研究的結果顯示整體上喊叫能夠減少QEOG和增加MPF,當進一步比較各秒鐘的QEOG和MPF,則顯然有相當的個體差異,此說明了APRL動作必須經由學習和訓練。至於對視力的影響,APRL動作至少能夠維持視力的敏銳度,以及顯著地縮短閱讀視力卡的時間。有關APRL動作的抑制眼振機制,可能是喊叫聲音修飾腦幹的前庭神經核傳入眼球肌肉的訊息,尚有待後續的探討。 |
英文摘要 | INTRODUCTION. Coriolis illusion resulted from tilting one's head during whole-body rotation is recognized as a very dangerous scenario in flight. Its cross-coupled stimulus to the semicircular canals will cause vestibular nystagmus and thence impair visual acuity. Moreover, it will lead to overwhelming-incapacitating spatial disorientation. APRL maneuver, a repeatedly yelling action generated by abdominal stress, was developed previously by us in name of Aviation Physiology Research Laboratory. Some neurological studies have been done and evidenced its effectiveness for shortening the disorientation duration. This study is to extend our previous work and investigate if APRL maneuver can depress the sweeping motion of eyes after cross-coupled stimulation. METHODS. Twenty-one subjects (male: 18, female: 3) voluntarily participated this study using a disorientation demonstrator (DISO). They were asked to tilt their head and relocate two switches when the DISO had been accelerated to 30 rpm for 30 seconds. Then they repositioned their head and started to read a visual acuity test card 5 seconds after yelling or not. Meanwhile, EEG and EOG were recorded simultaneously and computed later using a fast Fourier algorithm and quantified by QEOG and MPF. RESULTS. As a whole, we found that yelling reduced QEOG and increased MPF when suffering from Coriolis illusion. However, when comparing these parameters during 1~5 second right after yelling, there were significant variation among subjects. This finding indicates APRL is a learned technique needed practice and training. With respect to visual function, the results showed that APRL maneuver could maintain the visual acuity to some extent and shortened the time consumption for visual tester card reading. The underlying mechanism could be yelling modifies the afferent signals of ascending tract arisen from vestibular nuclei to oculomotor nucleus and so diminish eye sweeping motion. CONCLUSION. Performing APRL maneuver when incidentally exposed to Coriolis acceleration can effectively facilitate the recovery from spatial disorientation. If one performs properly, it may also inhibit nystagmus. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。