[Bioelectrical activity of the vagus nerve in chronic experiments with reversible disorders of the coronary...

Shifts of the ECG and vagal ENG in chronic experiments on dogs with reversible disturbances of coronary circulation involved an increase of the ENG oscillations from 240 +/- 23/sec during cessation of the circulation in a branch of the left coronary artery to 310 +/- 29.4/sec after restoration of the blood flow, both the high- and low-amplitude oscillations being interrelated in a similar way in both cases as 1:9. The data obtained show the ENG shifts to develop ahead of the ECG ischemic changes in coronary blood flow disturbances, the enhancement of vagal electrical response being more obvious in the postischemic period.