Buffalo Bills safety Damar Hamlin might have been a fraction of a second away from moving on to the next play. Hamlin suffered a cardiac arrest Monday night when he collapsed on the field in ...

Murmurs are characterized by their grade, pitch, timing in the cardiac cycle, change in intensity, quality, location heard best, and radiation. Systolic murmurs. Almost all systolic murmurs begin in ...

Optimal windows exist for action and perception during the 0.8 seconds of a heartbeat, according to new research. The sequence of contraction and relaxation is linked to changes in the motor system ...