The 8-to-12 Hz EEG waves that are associated with relaxed wakefulness and often occur just before sleep are called
A) alpha waves.
B) delta waves.
C) K complexes.
D) sleep spindles.
E) REM waves.

Question

Quizplus · Accepted Answer

Alpha waves are typically observed in relaxed wakefulness and can occur just before sleep. They have a frequency range of 8-12 Hz. Delta waves (B) have a frequency range of 0.5-4 Hz and are associated with deep sleep. K complexes (C) and sleep spindles (D) are also EEG waves associated with sleep but have different frequencies and patterns than alpha waves. REM waves (E) are not a recognized EEG wave and do not occur during wakefulness or just before sleep.

The 8-To-12 Hz EEG Waves That Are Associated with Relaxed