视、听觉是人类信息加工的两个主要感觉通道。视功能的很多指标对缺氧均很敏感，在低于海拔3000m时已有损害；而人们认为，听觉功能对缺氧相对不敏感，甚至到达海拔4600m时仍保持正常。缺氧可使人的反应延迟，但这种延迟有无感觉通道依赖性则未见研究报道。本试验的目的，一是 Visual, auditory processing of human information is the two main channels of perception. Many of the indicators of visual function are sensitive to hypoxia and have been impaired below 3000 m above sea level; whereas, it is believed that auditory function is relatively insensitive to hypoxia and remains normal even up to an altitude of 4600 m. Hypoxia can delay the response in humans, but there is no report on whether this delay has any or no sensory pathway dependence. The purpose of this experiment, one is