What is an electroencephalogram (EEG) used for?

An electroencephalogram (EEG) is used specifically for measuring the electrical activity of the brain. This technique involves placing electrodes on the scalp, which detect the electrical impulses produced by neuronal activity. The resulting data provides valuable insights into brain function, allowing clinicians to assess various conditions such as epilepsy, sleep disorders, and other neurological issues. By analyzing the patterns and waves recorded in an EEG, healthcare providers can gain a deeper understanding of brain activity, diagnose certain disorders, and monitor the effects of treatments.

In contrast, measuring heart rate involves different technologies, such as electrocardiograms (ECGs), that focus on cardiac rhythms. Assessing blood pressure involves the use of sphygmomanometers, which specifically measure the force of blood against the walls of arteries. Testing muscle strength typically requires methods such as manual muscle testing or using specialized equipment to evaluate neuromuscular function. Each of these alternatives targets a distinct physiological aspect, while an EEG focuses exclusively on brain activity.