Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1989
1989
1992
2000-100 BCE
1990
1988
1989
1990-1991
1990-1991
2000-100
1990s
1990-96
1988
1988
1990
1988
1992
1988-1992
1990
1989
1988
1989
1990
4000-2001 BCE
1988
1992
1992
1992
1992
1992
1992
1992
1992
1992
1992
1989
1992
1988
1989
1989
1989
1989
1989
1990
1991
1990
1980s/ early 1990s
late 1980s/ ealry 1990s
1990s