脑电图（EEG）是临床神经系统检查的一个有用的辅助手段，特别是因为它可以检测到轻微的或亚临床的大脑功能障碍，并且能监测随时间变化的大脑活动。近期，BMJ Practical ...

The different types of brain waves as they appear on an EEG. Delta waves (top) are slow and low-frequency, while gamma rays ...