Characterizing optically pumped magnetometers

脑磁图（MEG）是一种评估大脑活动的工具。它的工作原理是测量人脑中的磁场，这些磁场会被大脑中的电流随意改变。这些电流源于神经元内的流动，神经元是大脑中的核心细胞。目前有大量的研究人员和临床医生利用脑磁图来评估动作感知理论，以诊断脑震荡。目前的技术使用一种叫做SQUID的传感器，它需要一个低温容器。在这个项目中，我们希望探索不需要squid的其他类型的传感器技术。

Magnetoencephalography (MEG) is a tool used to assess brain activity. It works by measuring the magneticfields present within the human brain, these fields are causally altered by electrical currents in the brain. Thesecurrents originate from flow within the neurons, the core cell present within the brain. There are at present alarge user base of researchers and clinicians that utilize MEG to assess theories of action perception, to thediagnosis of concussion. The current technology uses a sensor type called a SQUID, which requires a cryogenvessel. In this project we wish to explore other types of sensor technology that do not require SQUIDs.