Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1989
1996
1996
1996
1996
1996
1997
1997
1996
1990-1998
1979
1996
1996
1993
1984
1997
1983
1997
1985
1984
c.1998
1995
1995
1995
1987
1998
1995
1980
1996-1998
circa 1983
1986
1990-1997
1994
1984; 1983
1985
1980-1989
1993
(1962); 1982
1985
1996
1996
1980-1989
1981-1990
1982
1985
1980
1998
1997
1987