Which procedure involves recording the electrical activity in the brain and can detect seizure activity, tumors, or injuries to the brain?

Which procedure involves recording the electrical activity in the brain and can detect seizure activity, tumors, or injuries to the brain?

• A. Lumbar puncture
• B. Electroencephalogram (EEG)
• C. Nasal mucous membrane
• D. Sinus cavities

Answer: (B)

Measuring the brain’s electrical activity with scalp electrodes is how we assess brain function and detect abnormalities like seizures, injuries, or effects from a tumor. This test, the electroencephalogram, records neuronal signals and translates them into patterns. Seizure activity shows distinctive electrical signs such as spikes or sharp waves. Areas affected by injury or tumor can alter local brain rhythms or show slowing, providing functional clues even when structural imaging isn’t definitive. Lumbar puncture analyzes cerebrospinal fluid and helps diagnose infections or bleeding, but it doesn’t measure brain electrical activity. The remaining options are anatomical or fluid-related tests and don’t assess the brain’s electrical function.

Measuring the brain’s electrical activity with scalp electrodes is how we assess brain function and detect abnormalities like seizures, injuries, or effects from a tumor. This test, the electroencephalogram, records neuronal signals and translates them into patterns. Seizure activity shows distinctive electrical signs such as spikes or sharp waves. Areas affected by injury or tumor can alter local brain rhythms or show slowing, providing functional clues even when structural imaging isn’t definitive. Lumbar puncture analyzes cerebrospinal fluid and helps diagnose infections or bleeding, but it doesn’t measure brain electrical activity. The remaining options are anatomical or fluid-related tests and don’t assess the brain’s electrical function.