Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1981
1989
1981
1996
1996
1996
1996
1996
1997
1997
1996
1980-1990
1981-1990
1990-1998
1996
1996
1993
1984
1997
1983
1997
1985
1984
c.1998
1995
1995
1995
1987
1998
1998
1995
1980
1984
1981
1980
1980-1989
1986
1996-1998
1983
1994
1997
1981
circa 1983
1986
1990-1991
1997
1987
1982
1994