Gevins A, Leong H, Smith M E, Le J, Du R
EEG Systems Laboratory and SAM Technology, San Francisco, CA 94105, USA.
Trends Neurosci. 1995 Oct;18(10):429-36. doi: 10.1016/0166-2236(95)94489-r.
High temporal resolution is necessary to resolve the rapidly changing patterns of brain activity that underlie mental function. While electroencephalography (EEG) provides temporal resolution in the millisecond range, which would seem to make it an ideal complement to other imaging modalities, traditional EEG technology and practice provides insufficient spatial detail to identify relationships between brain electrical events and structures and functions that are visualized by magnetic resonance imaging (MRI) or positron emission tomography (PET). Recent advances overcome this problem by recording EEGs from more electrodes, by registering EEG data with anatomical information from each subject's MRI, and by correcting the distortion that is caused by volume conduction of EEG signals through the skull and scalp. Along with its ability to record how brains think when performing everyday activities in the real world, these advances make modern EEG an invaluable complement to other functional neuroimaging modalities.
高时间分辨率对于解析构成心理功能基础的快速变化的大脑活动模式至关重要。虽然脑电图（EEG）能提供毫秒级的时间分辨率，这似乎使其成为其他成像方式的理想补充，但传统的EEG技术和实践所提供的空间细节不足，无法确定大脑电活动与通过磁共振成像（MRI）或正电子发射断层扫描（PET）可视化的结构及功能之间的关系。最近的进展通过从更多电极记录EEG、将EEG数据与每个受试者MRI的解剖信息配准以及校正EEG信号通过颅骨和头皮的容积传导所引起的失真来克服这一问题。连同其记录大脑在现实世界中进行日常活动时如何思考的能力，这些进展使现代EEG成为其他功能神经成像方式的宝贵补充。
