Neurogenic heartbeat is initiated by a nerve impulse caused by a nerve ganglion situated near the heart. whereas myogenic heartbeat is initiated by a specialized group of modified heart muscle fibres. Therefore, once separated from the body, the neurogenic heart stops beating while the myogenic heart continues to beat for some time.
Neurogenic heartbeat – Annelids, most arthropods
Myogenic heartbeat – Mollusca and Vertebrates