Which brain waves are associated with slower brain activity of about 6 to 8 cycles per second and are often paired with slow eye movements?

Theta waves are indeed associated with slower brain activity and typically range from about 4 to 7 cycles per second, which corresponds to the 6 to 8 cycles per second mentioned in the question. These waves are often observed during light sleep and when a person is in a relaxed state, such as just before falling asleep or during daydreaming.

In addition to their frequency, theta waves are also linked to certain brain states that involve meditative and relaxed awareness, often accompanied by slow eye movements. This particular brain wave pattern is significant in various contexts, including memory processing and creativity.

The other types of brain waves serve different functions: alpha waves are associated with relaxation while awake but alert (typically around 8 to 12 cycles per second), delta waves indicate deep sleep (0.5 to 4 cycles per second), and beta waves are connected with active thinking and alertness (12 to 30 cycles per second). Thus, theta waves are uniquely characterized by their slower frequency and associations, making them the correct choice for the given question.