Abstract
The methods and apparatus for leading off action currents from the human parotid gland and for recording velocity of salivary secretion were described in detail.
1) On the opening of the Stensen's duct we fixed a Krasnogorski's. suction capsule in which a small silver electrode was placed. A diffuse electrode of silver was placed on the skin of the parotid region. In response to a gustatory stimulus a galvanometer which was connected with the pair of electrodes showed a marked deflection accompanying an increased salivary secretion. It was found that the elicited action current consisted of a slow potential change and rapid potential waves superimposed upon it.
2) With a simple apparatus, secretion velocity was recorded photo-graphically. It was shown that the time course of the velocity was closely similar to that of the action current.
