Study Of Hypoxic Fatigue Induced By Simulated High Altitude Based On EEG

This dissertation studied the effect of acute hypoxia induced by simulated high altitude through EEG analysis, some auxiliary psychology parameter analyses, and neural behavior evaluation. Detailed experiment schemes and related processing methods are provided as well as some meaningful results.In the study, healthy subjects were asked to breathe the mixture of nitrogen and oxygen wearing air-supply mask to simulate high altitude condition. The EEGs were recorded from scalp electrodes according to the extended standard 10-20 international electrode placement system. The neurobehavioral evaluation test was conducted while EEG and other auxiliary psychology parameters were recorded.Feature-extracting methods, including time and frequency domain and nonlinear dynamics analysis, were utilized. BP neural network and the support vector machine were used as the classifiers. The EEGs of 30 channels obtained form healthy subjects were analyzed topographically under normal and different hypoxia conditions.The results suggested that acute hypoxia could lead to the obvious variation of α rhythm and EEG complexity. Hypoxic training could enhance the resistance to hypoxia and postpone the fatigue induced by hypoxia.