electrogramn.

1877 Q. Jrnl. Meteorol. Soc. 3 169 This is, as far as I know, the first occasion that an Electrogram from Thomson's electrometer has been reproduced in connection with other automatic records.

1919 Proc. Royal Soc. 1918–19 A. 95 210 The appearance of the electrogram during heavy fog is usually so characteristic that from it alone one could say with a close approach to certainty that fog existed.

1939 Meteorol. Mag. 74 49 All the electrograms have been scrutinised with a view to the detection of periods in which negative gradient occurred.

1972 Meteorol. & Geoastrophysical Abstr. 23 388 Fundamental characteristics of storm activity in Venice during the 11-yr period of 1959–1969, using the electrograms obtained in the Observatory during this period.

1909 Lancet 22 May 1449/2 In both cases the electrogram is composed of an auricular element..and of a double ventricular element.

1932 Proc. Soc. Exper. Biol. & Med. 1931–2 29 902 (caption) Simultaneous electrogram and myogram of isolated intestinal segment.

1943 Amer. Heart Jrnl. 25 843 Simultaneous, selective (unipolar) electrograms of the right and left ventricles of the freed human heart.

1974 V. B. Mountcastle Med. Physiol. (ed. 13) II. xxxiii. 878/2 Records obtained with one electrode placed directly on the heart and another electrode at a great distance from the heart, where it is unaffected by the cardiac action potential, are called unipolar cardiac electrograms.

2002 A. H. Dougherty in S. Wilansky & J. T. Willerson Heart Dis. Women ii. 18 Sinus nodal electrograms may be recorded with special catheter electrodes in vivo.