AP PSYCHOLOGY

Detailed explanation-1: -Theta Brainwaves: Like Delta brainwaves, theta waves occur when you are relaxing or sleeping, and indicate dreaming and focus.

Detailed explanation-2: -As mentioned, alpha waves fall in the middle of the brain wave spectrum. Your brain produces these waves when you’re not focusing too hard on anything in particular. Whatever you’re doing, you’re probably feeling relatively calm and relaxed. These waves measure between 8 and 12 Hz.

Detailed explanation-3: -The early portion of stage 1 sleep produces alpha waves, which are relatively low frequency (8–13Hz), high amplitude patterns of electrical activity (waves) that become synchronized (Figure SC. 8). This pattern of brain wave activity resembles that of someone who is very relaxed, yet awake.

Detailed explanation-4: -Types of Brain Waves Theta waves, which are between 4 and 8 Hz, occur during light sleep or deep relaxation. Alpha waves, which measure between 8 and 12 Hz, occur when people feel relaxed and when the brain is in an idle state without concentrating on anything.