An electroencephalogram is primarily used to assess which type of medical condition?

• A. Brain disorders
• B. Heart disease
• C. Lung disorders
• D. Digestive issues

Answer: (C)

An electroencephalogram records the brain’s electrical activity by placing sensors on the scalp. Because it directly monitors brain waves, its primary use is to evaluate brain disorders—most notably epilepsy and seizures, along with other conditions that affect brain function such as sleep disorders or encephalopathy. It doesn’t measure heart activity, lung function, or digestive processes, which is why those other options aren’t appropriate.