diphasic

A record of the potential changes in the nerve shows a succession of brief diphasic waves, each due to the passage of a single impulse along the nerve fibre.

Edgar Adrian - Nobel Lecture 1965

A similar diphasic variation is also observed in the responses of plants and metals (figs. 26, 68).

Response in the Living and Non-Living Jagadis Chandra Bose 1897

There would therefore be no continuous balance, and we obtain instead a very interesting diphasic record.

Response in the Living and Non-Living Jagadis Chandra Bose 1897

It is therefore difficult to fix an absolutely neutral point, but a point may be found which approaches this very nearly, and on stimulating the stalk near this, a very interesting diphasic variation has been observed.

Response in the Living and Non-Living Jagadis Chandra Bose 1897

# -- A diphasic variation is observed in nerve, if the wave of molecular disturbance does not reach the two contacts at the same moment, or if the rate of excitation is not the same at the two points.

Response in the Living and Non-Living Jagadis Chandra Bose 1897

In this case, owing to a slight difference in the rates of propagation in the two directions, a very interesting diphasic variation was produced (fig.  26, _c_).

Response in the Living and Non-Living Jagadis Chandra Bose 1897

The negative or downward response is now very conspicuous, there being only a mere preliminary indication of the positive effect. (_b_) The amplitude of vibration of B is now slightly reduced, and we obtain the diphasic effect. (_c_) The intensity of vibration of B is diminished still further, and the negative effect is seen reduced to a slight downward after-vibration, the positive up-curve being now very prominent (fig.  67).

Response in the Living and Non-Living Jagadis Chandra Bose 1897

Some curious effects produced by the change of time relations have been noticed in the account given of diphasic variation (see p.  113).

Response in the Living and Non-Living Jagadis Chandra Bose 1897

It need only be added here that the diphasic variations as exhibited by metals are in every way counterparts of similar phenomena observed in animal tissues.

Response in the Living and Non-Living Jagadis Chandra Bose 1897