Van Orden K F, Ahlers S T, Thomas J R, House J F, Schrot J
Environmental Medicine Department, Naval Medical Research Institute, Bethesda, MD.
Aviat Space Environ Med. 1990 Jul;61(7):636-9.
Visual, auditory event-related potentials, and brainstem auditory-evoked responses were recorded in as many as six young male subjects in order to study the effects of moderate cold air exposure on central nervous system functioning. Evoked potentials were recorded during repeated 50-min exposures to air of 4 and 22 degrees C; these levels of exposure resulted in no change in rectal core temperature. Evoked potentials recorded during exposures to 4 degrees air displayed consistently shorter latencies compared to those recorded at 22 degrees, suggesting faster CNS processing of sensory stimuli in the cold. These results are consistent with recent investigations of cold-induced behavioral response changes which indicate that increased arousal may occur with moderate (nonhypothermic) cold exposure.
为了研究适度暴露于冷空气对中枢神经系统功能的影响，对多达6名年轻男性受试者进行了视觉、听觉事件相关电位和脑干听觉诱发电位的记录。在反复50分钟暴露于4摄氏度和22摄氏度的空气中时记录诱发电位；这些暴露水平并未导致直肠核心温度发生变化。与在22摄氏度时记录的诱发电位相比，在暴露于4摄氏度空气期间记录的诱发电位潜伏期始终较短，这表明在寒冷环境中中枢神经系统对感觉刺激的处理速度更快。这些结果与最近关于冷诱导行为反应变化的研究一致，这些研究表明，适度（非体温过低）的寒冷暴露可能会导致唤醒增加。
