AP Psychology Practice Test

What are alpha waves a sign of?

1. Deep sleep

2. The onset of sleep

3. A relaxed, awake state

4. Intense concentration

The correct answer is: A relaxed, awake state

Alpha waves are brainwave patterns that typically indicate a relaxed, awake state. These waves are present when an individual is in a calm and tranquil state, yet still alert and aware of their surroundings, usually occurring during moments of quiet reflection or when one is meditating. The frequency of alpha waves is associated with relaxation and the transition between wakefulness and sleep, but they are most specifically linked to that relaxed alertness. In contrasting scenarios, deep sleep is characterized by different brainwave patterns, notably delta waves, which are slower and indicate a more restorative sleep stage. The onset of sleep, on the other hand, is marked by the transition from beta waves (associated with alertness) to alpha waves and eventually to theta waves, which typically emerge as one begins to drift off. Intense concentration is often associated with beta waves, which indicate a more active cognitive state. Thus, the presence of alpha waves indeed signifies a relaxed, awake state rather than deep sleep, the onset of sleep, or intense concentration.