| Magnetoencephalography,
MEG |
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| SQUIDS operate at |
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| superconducting |
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| temperatures
(-269oC). |
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| Sensors are
placed in a |
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| dewar containing
liquid |
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| helium. |
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| Stimulus – evoked |
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| neuromagnetic
signals |
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| are recorded by an |
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| array of
detectors. |
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| The spatial
location of the |
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| source is
inferred by |
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| mathematical
modeling of |
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| the magnetic
field pattern. |
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| Tiny magnetic
fields |
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| produced by brain |
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| activity (10-13
Teslas) |
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| can be measured
using |
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| Superconducting |
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| Quantum
Interference |
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| Devices (SQUIDs). |
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| Columbia fMRI |