Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1989
1990-1991
1990-1991
2000-100 BCE
1990
1992
2000-100
1989
1989
1990s
1989
1990-96
1989
1992
1990
4000-2001 BCE
1990
1990
1992
1989
1989-08
1992
1991
1991
1992
1991
1990
1990
1990
1992
1989
circa 1990
1990s
1991
1989
1989
1992
1992
1990
1991
1992
1991
1992
1989-1992
1989
1991
1991
2500 BCE
1989