| 主权项 |
1. A magnetoencephalography system for use with a head, said magnetoencephalography system comprising:
a shell having an outer surface and an inner surface, said inner surface being shaped to surround the head; a first three-axis gradiometer operable to detect a first magnetic field vector from a magnetic dipole in the head and to generate a first detected signal based on the first magnetic field vector, said first three-axis gradiometer being disposed at a first position of said inner surface; a second three-axis gradiometer operable to detect a second magnetic field vector from the magnetic dipole in the head and to generate a second detected signal based on the second magnetic field vector, said second three-axis gradiometer being disposed at a second position of said inner surface; a third three-axis gradiometer operable to detect a third magnetic field vector from the magnetic dipole in the head and to generate a third detected signal based on the third magnetic field vector, said third three-axis gradiometer being disposed at a third position of said inner surface; a noise reference sensor configured to detect ambient noise; and a computing portion comprising at least a processor configured to:
remove ambient noise; anddetermine a location of the magnetic dipole based on the first detected signal, the second detected signal and the third detected signal, wherein at least one three-axis gradiometer of the first, second, and third three-axis gradiometers does not include a superconducting device; wherein each of the first three-axis gradiometer, the second three-axis gradiometer, and the third three-axis gradiometer comprise a first detection portion, a second detection portion and a third detection portion; and wherein the first detection portion, the second detection portion, and the third detection portion are parallel to each other. |
