West of Scotland School of Anaesthesia, United Kingdom.
Med Hypotheses. 2010 Dec;75(6):547-9. doi: 10.1016/j.mehy.2010.07.025. Epub 2010 Aug 21.
Awareness under anaesthesia is an uncommon but serious phenomenon, which continues to occur despite the use of commercially available depth-of-anaesthesia (DOA) monitors. Many of these monitors use processed electroencephalographic (EEG) data to give an indication of anaesthetic depth. They all suffer from error due to electrical interference, individual variation and the inevitable inaccuracy inherent in the rendering of complex waveforms into a simplified digital score. It is recognised that, in the processing of complex analogue audio waveforms (i.e. sound), the human ear consistently outperforms the computer. I hypothesise that an audio signal derived from the raw EEG waveform could form the basis of a DOA monitor, enabling humans to directly determine whether a patient is awake or anaesthetised from sound alone. I propose to call the sounds derived from amplification of the EEG trace the 'audio EEG'.
麻醉意识是一种不常见但很严重的现象，尽管使用了市售的麻醉深度（DOA）监测仪，但这种现象仍在继续发生。这些监测仪中的许多都使用经过处理的脑电图（EEG）数据来指示麻醉深度。它们都因电干扰、个体差异以及将复杂波形转换为简化数字评分时不可避免的不准确性而存在误差。人们认识到，在处理复杂的模拟音频波形（即声音）时，人耳始终优于计算机。我假设，从原始 EEG 波形中得出的音频信号可以作为 DOA 监测仪的基础，使人类能够仅凭声音直接判断患者是否清醒或处于麻醉状态。我提议将从 EEG 迹线放大得到的声音称为“音频 EEG”。
