What is the graphic recording of brain wave activity called?

The graphic recording of brain wave activity is referred to as an electroencephalogram (EEG). This procedure involves placing electrodes on the scalp to detect electrical impulses generated by neuronal activity in the brain. The resulting record displays these brain waves as a series of patterns, which can help in diagnosing various neurological conditions, such as epilepsy, sleep disorders, and other brain-related issues.

In contrast to other terms, an echocardiogram specifically relates to imaging of the heart, the electrocardiogram pertains to the electrical activity of the heart, and neurography is a technique used to visualize nerves, rather than electrical activity in the brain. This distinction highlights the unique focus of the electroencephalogram on analyzing brain waves, making it the appropriate term for the question asked.