Neurophysiology is the branch of science that studies how the nervous system functions. It focuses on the activities of neurons, which are the cells that transmit signals throughout the body. By understanding how these signals work, researchers can learn more about how we think, feel, and move. This field is essential for exploring conditions like Parkinson's disease and epilepsy, which affect the nervous system. In addition to studying neurons, neurophysiology also examines how different parts of the brain, such as the cerebral cortex and hippocampus, interact with each other. This knowledge helps scientists develop treatments for various neurological disorders and improve our understanding of human behavior and cognition.