
Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
2000-100 BCE
1990
1990
1990
1990
circa 1990
1990s
1990
4000-2001 BCE
1990
1990-96
1990
1990
1990-95
1990
early 1990s
circa 1990
circa 1990
1990s
30 CE
30 CE
2686-2613 BCE
1990
1990
circa 1990s
1990
2000-500
1990
30-200
2000-1350
20-500
20-500
2000-500
1990s
circa 1990
2000-500
2000-1000
3500-1000
2000-1350
2000-1000
circa 1990
2000-500
2000-800
1990
circa 1990
circa 1990
circa 3000 BCE
1990
1990