Ioannides Andreas A
Laboratory for Human Brain Dynamics, RIKEN Brain Science Institute, Saitama, Japan.
Methods Mol Biol. 2009;489:167-88. doi: 10.1007/978-1-59745-543-5_8.
Magnetoencephalography (MEG) encompasses a family of non-contact, non-invasive techniques for detecting the magnetic field generated by the electrical activity of the brain, for analyzing this MEG signal and for using the results to study brain function. The overall purpose of MEG is to extract estimates of the spatiotemporal patterns of electrical activity in the brain from the measured magnetic field outside the head. The electrical activity in the brain is a manifestation of collective neuronal activity and, to a large extent, the currency of brain function. The estimates of brain activity derived from MEG can therefore be used to study mechanisms and processes that support normal brain function in humans and help us understand why, when and how they fail.
脑磁图描记术（MEG）包含一系列非接触、非侵入性技术，用于检测大脑电活动产生的磁场，分析该脑磁图信号，并利用结果研究脑功能。脑磁图描记术的总体目的是从头部外部测量的磁场中提取大脑电活动时空模式的估计值。大脑中的电活动是神经元集体活动的一种表现，在很大程度上是脑功能的表现形式。因此，从脑磁图描记术得出的大脑活动估计值可用于研究支持人类正常脑功能的机制和过程，并帮助我们理解它们为何、何时以及如何出现故障。
