A new study from the American Academy of Neurology found that an irregular circadian rhythm could be linked to an increased risk for dementia. The circadian rhythm is the body’s internal clock, ...

What Is a Normal Sinus Rhythm? Normal sinus rhythm is when your heart beats in a regular, organized way. Your body has a built-in pacemaker called the sinoatrial (SA) node, or sinus node. It uses ...

A central pattern generator (CPG) is a neuronal network in which interconnected excitatory and inhibitory neurons produce an oscillating, rhythmic output in the absence of sensory feedback. CPGs play ...

Going to bed earlier and waking in the early morning often matches humans’ natural circadian rhythm, or internal clock, which tends to follow daylight patterns. Most adults need at least 7 hours of ...