The delta waves seen in the EEG when someone is in stage 3 sleep can be likened to A) a room full of chattering parrots.
B) the slow movement of "the wave" around a stadium.
C) a busy parking lot with cars moving in different directions.
D) the slow flow of water out of a tap.

The delta waves seen in the EEG when someone is in stage 3 sleep can be likened to:

B) the slow movement of "the wave" around a stadium.

Explanation:

Delta waves are a type of brain wave found in humans. It is a slow, low-frequency brainwave (between 1.5 and 4 hertz) that has high amplitude. The best way to imagine it is to compare it to "the wave" done by people around a stadium. That slow yet ample movement of "the wave" helps us visualize what the delta waves seen in the EEG are like. Delta waves are associated with deep sleep - the third and fourth stages of sleep.

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