Pacemaker

The term pacemaker has multiple meanings:

In biology and medicine,
* Cardiac pacemaker is a group of cells within the heart that together initiate contractions and set the pace of beating.
*Artificial pacemaker may be implanted to provide proper heart rhythm when the body's natural pacemaker does not function properly.
*Brain pacemaker is a device which sends electrical impulses to the brain in order to relieve depression, epilepsy and other conditions.
In the world of high school and collegiate journalism, the National Pacemaker Awards are America's highest honors, awarded to publications and broadcast media by the National Scholastic Press Association and the Associated Collegiate Press, respectively.
In sports, a pacemaker or pacer is a competitor who enters an athletics race with little or no intention of winning, but purely to set a fast pace for other competitors to follow.

A backing musician in the group Gerry & the Pacemakers

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