Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1989
1990-1991
1990-1991
2000-100 BCE
1990
2000-100
1989
1989
1990s
1989
1990-96
1989
1990
4000-2001 BCE
1990
1990
1989
1989-08
1991
1991
1991
1990
1990
1990
1989
circa 1990
1990s
1991
1989
1989
1990
1991
1991
1989
1991
1991
2500 BCE
1989
1991
circa 1990
1989
1989
1989
1989
1989
1989
1989
1989
1989