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.

Question

Quizplus · Accepted Answer

The statement suggests that the first night of sleep in a laboratory could be fitful, which could impact the results of any formal testing. Thus volunteers are usually habituated to the sleep laboratory for a few nights before the actual testing to avoid this first-night effect.

Volunteers in Sleep Experiments Are Normally Habituated to the Sleep