An electrocardiogram, called an EKG or ECG, measures the electrical activity of the heart and collects data about heart’s health. Typically, a doctor or technician places electrodes connected to a monitor on the skin to get algorithm and biometric information. Some of the insights an EKG can give include heart rate, stress level, heart age, mood, fatigue, breathing index, and heart rate variability. EEG, on the other hand, stands for electroencephalograms. This device detects electrical activity in the brain and has metal electrodes that attach to the scalp.

1. The Heart’s Electrical Impulses

EKGs help illuminate how the heart functions from beat to beat. The sinoatrial node, also called the SA node, in the heart sends an electrical impulse across the heart muscle cells and makes the heart contract. This contraction is a heartbeat. When the SA node is sending these signals properly, the individual has a healthy heartbeat, even if there are some irregularities. EKGs measure electrical impulses from the SA node. Doctors sometimes match the data collected from an EKG with the same person’s heart algorithms to learn more about his or her overall health. This information enables doctors to be more proactive about health issues.

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