Electrophysiology serves as a cornerstone in the field of neurology, offering invaluable insights into the electrical activities of the nervous system. It encompasses a diverse range of techniques, including electroencephalography (EEG), electromyography (EMG), nerve conduction studies, and intraoperative neurophysiological monitoring. EEG, a non-invasive method, captures the brain's electrical activity, offering crucial diagnostic insights into conditions like epilepsy, sleep disorders, and cognitive deficits. EMG, on the other hand, assesses the electrical activity of muscles, aiding in the diagnosis and management of neuromuscular disorders such as myasthenia gravis and ALS. Nerve conduction studies evaluate the integrity and function of peripheral nerves, aiding in the diagnosis of conditions such as carpal tunnel syndrome and diabetic neuropathy. Intraoperative neurophysiological monitoring plays a critical role during surgical procedures, ensuring the preservation of neurological function by monitoring neural activity in real-time. Together, these electrophysiological techniques contribute significantly to the diagnosis, treatment, and management of neurological disorders, ultimately improving patient outcomes and quality of life.