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common perpendicular

Let l 1 and l 2 be two straight lines in space that do not intersect and are not parallel. The common perpendicular of l 1 and l 2 is ...

Neurolinguistics

Neurolinguistics   Reference library

International Encyclopedia of Linguistics (2 ed.)

Reference type:
Subject Reference
Current Version:
2003
Subject:
Linguistics
Length:
5,007 words
Illustration(s):
4

...of the MEG Sensing System The major advantage of MEG is that, in contrast to EEG, the magnetic fields are largely unaffected by in-homogeneities in the skull and scalp. Another important difference between MEG and EEG is that MEG is insensitive to current flows oriented perpendicularly to the scalp: only the tangential component of a current flow will produce a measurable field, while EEG measures the combination of radial and tangential sources. In practice, this implies that MEG is most sensitive to activity on the banks of sulci and less sensitive to...

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