Mihevic P M, Gliner J A, Horvath S M
Int Arch Occup Environ Health. 1983;51(4):355-63. doi: 10.1007/BF00378349.
This study examined the influence of exposure to ambient carbon monoxide resulting in final carboxyhemoglobin (COHb) levels of approximately 5.0% on the ability to process information during motor performance. Subjects (n = 16) performed a primary reciprocal tapping task and a secondary digit manipulation task singly and/or concurrently during 2.5 h exposure to room air (0 ppm CO) or 100 ppm CO. Five levels of tapping difficulty and two levels of digit manipulation were employed. Tapping performance was unaffected when COHb levels were as high as 5%. However, at this level of COHb it was noted that CO exposure interacted with task difficulty of both tasks to influence reaction time on the digit manipulation task. It was concluded that motor performance was not influenced by exposure to CO leading to COHb concentrations of 5%. Task difficulty was a significant factor mediating behavioral effects of CO exposure.
本研究考察了暴露于环境一氧化碳中致使最终碳氧血红蛋白（COHb）水平约为5.0%时，对运动表现过程中信息处理能力的影响。受试者（n = 16）在暴露于室内空气（0 ppm一氧化碳）或100 ppm一氧化碳的2.5小时期间，单独和/或同时执行一项主要的交互敲击任务和一项次要的手指操作任务。采用了五个敲击难度级别和两个手指操作级别。当COHb水平高达5%时，敲击表现未受影响。然而，在这个COHb水平上，注意到一氧化碳暴露与两项任务的难度相互作用，影响了手指操作任务的反应时间。得出的结论是，暴露于一氧化碳导致COHb浓度达5%时，运动表现未受影响。任务难度是介导一氧化碳暴露行为效应的一个重要因素。
