Neural feedback loop for enhanced dynamic range magnetoencephalography (meg) systems and methods

A magnetic field measurement system, comprising:

• an array of magnetometers comprising a first magnetometer, each of the magnetometers, including the first magnetometer, comprising a vapor cell and a detector configured to receive light directed through the vapor cell;
• at least one magnetic field generator configured to modify a magnetic field experienced by the vapor cells of the magnetometers of the array;
• and
• a feedback circuit coupled to the at least one magnetic field generator and the detector of the first magnetometer, wherein the feedback circuit comprises a first feedback loop and a second feedback loop, wherein the first feedback loop comprises a first low pass filter with a first cutoff frequency and the second feedback loop comprises a second low pass filter with a second cutoff frequency, wherein the first feedback loop is configured to compensate, in each of the magnetometers, for magnetic field variations having a frequency lower than the first cutoff frequency using the at least one magnetic field generator and the second feedback loop is configured to compensate for magnetic field variations having a frequency lower than the second cutoff frequency using the at least one magnetic field generator.