An instrument regularly record the technical motions regarding the heart.
a musical instrument which, put into contact with the upper body, graphically registers the relative length and intensity of heart's moves
a guitar which, when put in contact with the upper body, will register graphically the relative timeframe and power of this heart's motions.
In physiology, an apparatus for recording by a tracing the movements regarding the heart.
medical instrument that registers electric currents of contractions regarding the heart
a medical instrument that measures the technical force of cardiac contractions as well as the quantity of blood passing through heart during a specified duration by calculating the recoil of the human anatomy as blood is moved from the ventricles