With what state of consciousness is the delta wave electroencephalograph pattern associated

A)  deep sleep 
B)  dreaming 
C)  agitation 
D)  a waking state

Delta Wave

A type of high amplitude brain wave seen in the deepest stages of sleep, associated with restorative sleep.

Electroencephalograph

An instrument used to record the electrical activity of the brain, typically through electrodes placed on the scalp.

Deep Sleep

A stage of sleep that involves the slowest brain waves during the sleep cycle, crucial for physical renewal and healing.