National League for Nursing (NLN PAX) Practice Exam

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The electrical activity of the brain is recorded as an?

Electrocardiogram
Angiogram
Electroencephalogram
Electromotor response

The correct answer is: Electroencephalogram

The correct choice reflects the process of measuring and recording the electrical activity of the brain. An electroencephalogram (EEG) is a diagnostic tool that captures the electrical impulses produced by neuronal activity in the brain. This is done by placing electrodes on the scalp that detect electrical signals, allowing healthcare professionals to assess brain function, identify abnormal brain activity, and diagnose various neurological conditions such as epilepsy, sleep disorders, and others. In contrast, an electrocardiogram is specifically used to measure the electrical activity of the heart, providing information about heart rhythm and overall cardiac function. An angiogram involves imaging techniques to visualize blood vessels, and it is not related to electrical activity. Electromotor responses are not standard terminology in this context; they may refer to muscle activity or reflexive responses to electrical stimulation but do not pertain to brain activity specifically. Thus, the electroencephalogram is the accurate and recognized method for recording brain electrical activity, which makes it the appropriate choice in this scenario.