Your doctor will decide what type of pacemaker you need based on your heart condition. The doctor programs the minimum heart rate. When your heart rate drops below that set rate, your pacemaker generates (fires) an electrical impulse that passes through the lead to the heart muscle.
The myth of Psyche and Eros (Cupid) is a mythological metaphor for the feminine journey toward consciousness. Psyche is the Greek word for both soul and butterfly. We delight in the beauty of the butterfly, but rarely admit the changes it has gone through to achieve that beauty. -Maya Angelou In Aztec and Mayan mythology, the god of fire Xiutecutli is represented as a butterfly. Fire, like the butterfly, is a symbol of transformation. In Mexico, the Nahauatl people believe that Monarch butterflies are the souls of dead children returning to their ancestral home.
More about the symbolic meaning of butterfly: The Mandarin Chinese word for butterfly is hu-tieh. Tieh means 70 years, therefore butterflies have become a symbol for a long life. In this culture butterflies have also become representative of young men in love.