FUNCTIONAL CHARACTERISTICS OF AFFERENT FIBERS FROM TOOTH PULP OF CAT

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Abstract
A study was made of the functional characteristics of the afferent fibers intrinsic to tooth pulp in the cat. These small myelinated fibers have conduction and excitation characteristics which resemble those of the A gamma-delta fibers of the cat''s saphenous nerve. Afferent volleys initiated electrically in these fibers give rise to activity in the descending root of the trigeminal nerve which is detectable by electrophysiological techniques. No evidence of slowly conducted activity such as would be expected from impulses in small un-myelinated fibers was observed.
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