Heart rate variability (HRV) is a measure of the variation in time between heartbeats and is an important indicator of autonomic nervous system (ANS) function. The ANS is responsible for ...

Heart function is controlled by the brain’s autonomic nervous system (the parasympathetic and sympathetic branches), responding to signals from these branches to speed up or slow down.

The interaction between stroke and heart health is a critical area of research, particularly as it relates to the autonomic nervous system's role in cardiovascular function. After a stroke ...

Various diseases can be treated by stimulating the vagus nerve in the ear with electrical signals. However, this technique ...

The body’s involuntary (autonomic) nervous system controls processes in the body that a person doesn’t consciously control. It’s always active and regulates a person’s heart rate ...

Heart Rate Increase in rate of contraction of cardiac muscle - cardiac output increases Decrease in rate of contraction of cardiac muscle - cardiac output decreases Breathing Rate Smooth muscle of ...

After the COVID-19 pandemic, the incidence rate of postural orthostatic tachycardia syndrome increased significantly, ...

Concussions may cause several types of symptoms that begin immediately or hours to days later. Here's what research shows ...