Dr. Kent conducts research on sleep. In one study, participa…

Dr. Kent conducts research on sleep. In one study, participants spend the night in a sleep laboratory and their brains are monitored using EEGs. Half of the participants are woken up repeatedly throughout the night any time they are about to enter a REM cycle of sleep. The other half are allowed to sleep undisturbed. In the morning they are tested to see how many dreams they can recall. What is the dependent variable?