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