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| Somatosensory
evoked |
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| magnetic
signals in |
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| response
to tactile |
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| stimulation
of the |
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| contralateral
index finger |
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| Isofield
contour maps at |
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| the
time of maximal |
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| response
(50 msec) to the |
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| tactile
stimulation |
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| The field pattern is dipolar |
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| with clearly defined regions |
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| of entering (solid lines) and |
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| emerging (dashed lines) |
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| magnetic
flux. |
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| Neuro magnetic response |
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| occurs about 50 msec after |
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| the
stimulation. |
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| Columbia fMRI |