High-frequency (acceleration) direct body ballistocardiography. Representation of the carotid pulse, phono- and apex-cardiogram in the Bcg.

The carotid pulse PCG, ACG and Bcg appear to represent the same basic dynamic expression whether of atrial or ventricular origin. The early isometric and ejection waves are comparably delineated. The points of A2, P2 and S3 can be detected, particularly,in CP2, ACG2 and df-Bcg. The gain, thereby, in the significance of the Bcg is encouraging.