Question

electrooculography records _______.
eye movement
heart rate
muscle tension
brain activity

Explanation:

Electrooculography (EOG) is a technique that measures the potential difference between the front and the back of the human eye. It is used to record eye - movement. Heart rate is measured by methods like electrocardiography, muscle tension by electromyography, and brain activity by electroencephalography.

Answer:

eye movement