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Overview

Perpendicular

Denoting the latest stage of English Gothic church architecture, prevalent from the late 14th to mid 16th centuries and characterized by broad arches, elaborate fan vaulting, and large ...

quatrefoil

quatrefoil  

An ornamental design of four lobes or leaves as used in architectural tracery, resembling a flower or clover leaf.
flint

flint  

Variety of chert, which occurs commonly as nodules and bands in chalk. It is deposited in the porous, permeable structures of sponge, diatom, and echinoid skeletons and also in burrows.
glass

glass  

[Ma]An artificial material produced by fusing silica sand with an alkali such as potash or sodium. It was probably developed from faience in the Near East during the 3rd millennium bc, but was not ...
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...

Phonological Features

Phonological Features   Reference library

International Encyclopedia of Linguistics (2 ed.)

Reference type:
Subject Reference
Current Version:
2003
Subject:
Linguistics
Length:
4,053 words
Illustration(s):
1

...articulators executes a limited set of behaviors. For example, the soft palate may be raised so as to prevent air from flowing through the nasal cavities, or it may be lowered to allow air to flow through and excite these cavities. The tongue body may be moved parallel and/or perpendicular to the spinal column; the lips may be rounded or spread, etc. In general, in the production of speech sounds, each articulator is independently controlled, so that the features executed by a given articulator are freely combinable with the features executed by any of the other...

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