Effect of underwater operation on EEG of oceanauts
10.3760/cma.j.issn.1009-6906.2016.02.002
- VernacularTitle:潜航作业对潜航员脑电图的影响
- Author:
Yanmeng ZHANG
1
;
Lu SHI
;
Zhongyuan SHI
;
Yangyang LI
;
Haifei YANG
;
Shuyao ZHOU
Author Information
1. 上海交通大学海洋水下工程科学研究院, 上海,200231
- Publication Type:Journal Article
- Keywords:
Oceanaut;
Underwater Operation;
EEG;
α-wave attenuation coefficient;
Sensation of stress
- From:
Chinese journal of nautical medicine and hyperbaric medicine
2016;23(2):88-90
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of underwater operation and subsea environment on the awareness of oceanauts,through recording the electroencephalogram(EEG) of the oceanauts at different time points and the subjective sense of stress during submerged operation and by quantitatively analyzing the changes in α-wave attenuation coefficient(AAC) and subjective sensation of fatigue with α-wave attenuation test(AAT).Methods Six "Jiaolong" oceanauts were involved in the experiment.EEGs of the oceanauts were recorded at 3 different time points,i.e.before submergence,at hour 1.5 and 2.5,and AAC was analyzed statistically.At the same time,the subjective sense of stress of the oceanauts was evaluated by using visual analogue scale (VAS).Results AAC(3.0 ± 1.2) of the oceanauts at hour 1.5 during submerged operation was increased to some extent,as compared with the control value (2.5 ± 1.5) before submergence,but without statistical significance(P ＞ 0.05).After 2.5 h submerged operation,the AAC (0.7 ± 0.2) was significantly decreased,as compared with those of the pre-submerged control value and the value detected at hour 1.5 (P ＜ 0.05),with statistical significance(P ＞0.05).The subjective sense of stress of the oceanauts after 1.5 h(1.3 ± 1.0)and 2.5 h (1.4 ± 1.1) submerged operation was significantly increased,as compared with the control value (0.5 ±0.7) before submergence,and statistical significance could be seen,when comparisons were made between them (P ＜ 0.05).Conclusions Continuous underwater operation for 2.5 hours could obviously decrease the awareness of the oceanauts in the manned submersible and at the same time increase the sense of stress,indicating that submerged operation had certain effects on the awareness of the oceanauts.
