Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1987
1989
1989
1987
2000-100 BCE
1990
1988
1989
1990s
1990-96
1988
1988
1990
1988
1987
1990
1989
1988
1989
1987
1990
4000-2001 BCE
1988
1987
1989
1988
1989
1989
1989
1989
1989
1990
1990
1980s/ early 1990s
late 1980s/ ealry 1990s
1990s
1990s
2000-1350
1988
1987-1989
1988
1990
1989
1989
circa 1987
1987
1990-95
circa 1990s
1988