Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1990s
2012-2015
1991
1980-1995
1980-1995
1980-1995
1958
1980
1980
1980-1995
1980-1995
1980-1995
1980-1995
1950-1970
2018
1972