Which brain wave is typically associated with relaxed mental states?

The alpha wave is typically associated with relaxed mental states. These brain waves oscillate between 8 to 12 Hz and are commonly present during states of calmness, relaxation, and light meditation. When a person is awake but relaxed and not engaged in intense mental activities, alpha waves dominate their brain activity. This is often observed when an individual is daydreaming, engaged in light meditation, or even during moments of quiet introspection.

In contrast to the other brain wave types, beta waves (fast and alert) are more associated with active thinking, problem-solving, or busy mental engagement. Theta waves, which are slower and represent deep relaxation and the early stages of sleep, occur less frequently during wakefulness compared to alpha waves, while delta waves are the slowest and are primarily linked to deep sleep. Thus, alpha waves are the hallmark of a relaxed yet alert state, making them the correct choice in this context.