Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1990
1988
1989
1989
2000-100 BCE
1989
1988
1990
1990s
1989
1990
1988
1988
1990
1988
1990-96
1988
1989
4000-2001 BCE
1989
1990
1988-1989
1970 and post 1989
1988
1988
10000-5000 BCE
circa 1990
circa 1990
circa 1990
circa 1990
1990
1990s
1988
1990
1990s
1990
circa 1990
1990
1989
1990
circa 1990
1990
1990
1988-1989
1990
circa 1990
1990
8500-2000 BCE
5000-500 BCE