Use of Palatography

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Abstract
A modern form of palatography is reviewed in which a black powder is sprayed directly on the teeth and palate. Following articulation, a mirror is placed in the mouth in such a manner that a photograph can be made of the roof of the mouth, thus recording the articulatory areas. Contour maps of the palate derived from casts and X-ray photographs may be employed to obtain further details. It is difficult to correlate at the present time physiological data about the positions of the vocal organs with the traditional phonetic categories which are used in most descriptions of speech.

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