Who / What
Electroencephalography (EEG) is an electrophysiological monitoring method used to record the electrical activity of the brain. It involves detecting the spontaneous electrical activity generated by neurons, specifically reflecting postsynaptic potentials in the neocortex and allocortex. EEG is typically non-invasive, with electrodes placed on the scalp using the International 10–20 system or related methods.
Background & History
Electroencephalography emerged in the late 19th century with the discovery of electrical activity in the brain by Richard Caton in 1875. Hans Berger is widely credited with developing the technique of EEG recording in the 1920s, pioneering its use for neurological research. Early applications focused on studying epilepsy and brain disorders. Over time, EEG techniques have advanced significantly, leading to more sophisticated recording systems and analysis methods.
Why Notable
EEG is a crucial tool in neuroscience and clinical medicine for understanding brain function and diagnosing neurological conditions. It provides valuable insights into brain activity, allowing clinicians to detect seizures, sleep disorders, and other disorders affecting brain function. Its non-invasive nature makes it a widely accessible and important diagnostic technique with significant impact on patient care and neurological research.
In the News
EEG is experiencing renewed interest due to advancements in wearable technology and its potential for real-time brain monitoring. Researchers are exploring EEG-based brain-computer interfaces (BCIs) to assist individuals with paralysis and to enhance human capabilities. The development of more portable and user-friendly EEG devices is making it accessible for research, education, and even consumer applications.