Maintaining a stable heartbeat is critical for survival. Your heart must constantly adapt its output to meet changing demands for oxygen and nutrients. Traditionally, scientists have attributed this ...

Long before we're born, our heart's tissues twitch and convulse in a rhythm that only ceases in our final hour. It's a function so mechanical we could be forgiven for overlooking its complexity. Yet ...

New research shows that the heart has a mini-brain -- its own nervous system that controls the heartbeat. A better understanding of this system, which is much more diverse and complex than previously ...

Accurately measuring electrical signals and calcium levels in the heart can lead to earlier treatment of potentially fatal conditions, such as heart attack or congestive heart failure. Calcium plays ...

Living with a heart that struggles to pump effectively creates daily challenges for millions of Americans. Systolic heart failure fundamentally changes how patients experience everyday activities.