Volunteers in Sleep Experiments Are Normally Habituated to the Sleep

Multiple Choice

Volunteers in sleep experiments are normally habituated to the sleep laboratory for a few nights before the commencement of any formal testing

A) to get rid of excess alpha activity.
B) to increase the amount of alpha activity.
C) because the first night of sleep in a laboratory is often fitful.
D) to get rid of delta sleep.
E) to increase the levels of stage 2 EEG.