Measurement of brain activity and brain structure with high accuracy in space and time requires precise modeling and a highly specialized instrument. In this project, we have faced the vast array of technological challenges posed by designing and implementing such an instrument. Most of these are problems that do not have existing solutions provided by knowledge in engineering — indeed, academic research has been crucial for making the technology reality. It is particularly noteworthy that ULF MRI is a completely new form of imaging that borrows little from conventional magnetic resonance imaging. Making magnetoencephalography (MEG) compatible with ULF MRI is also a challenge of its own. When aiming at higher...