A device placed on the skin that picks up electrical impulses released by the heart is known as

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An electrode is a device placed on the skin to pick up electrical impulses released by the heart. Lead wires are used to transmit signals from the electrodes to an amplifier or ECG machine. An amplifier is used to amplify the electrical signals picked up by the electrodes. Electrolytes are substances that conduct electricity and are used in ECG signal acquisition, but they are not typically placed directly on the skin.

A Device Placed on the Skin That Picks Up Electrical