Electrophysiology is the study of the electrical properties of biological cells and tissues. It focuses on how electrical signals are generated and transmitted in the body, particularly in the nervous system and heart. By measuring these electrical activities, scientists and doctors can understand how cells communicate and how various conditions affect their function. This field plays a crucial role in diagnosing and treating various medical conditions, such as arrhythmias in the heart or neurological disorders. Techniques like electrocardiograms (ECGs) and electroencephalograms (EEGs) are commonly used to monitor electrical activity, helping healthcare professionals make informed decisions about patient care.