Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1990-1991
1990-1991
2000-100 BCE
1990
1992
2000-100
1990s
1990-96
1992
1990
4000-2001 BCE
1990
1990
1992
1992
1991
1991
1992
1991
1990
1990
1990
1992
circa 1990
1990s
1991
1992
1992
1990
1991
1992
1991
1992
1991
1991
2500 BCE
1992
1992
1992
1992
1991
circa 1990
1992
1992
1992
1992
1992
1990-95
circa 1990