If you're unfamiliar with that technology, essentially, an fMRI machine is a big, tubular magnet that tracks the progress of deoxygenated iron in your blood.

如果您不熟悉这项技术， 从本质上讲， fMRI 机器是一个大型管状磁铁，可以跟踪血液中脱氧铁的进程。