Which of the following brain waves are typically seen in the awake but relaxed state?

The presence of alpha waves in the brain is typically associated with an awake but relaxed state. These waves oscillate at a frequency of 8 to 12 Hz and are commonly observed when an individual is awake yet calm, such as during moments of quiet reflection, meditation, or when simply resting with the eyes closed. Alpha wave activity indicates that the brain is alert but not actively engaged in intense cognitive tasks, facilitating relaxation while maintaining a state of consciousness.

In contrast, delta waves, which are slower and have a frequency of 0.5 to 4 Hz, are generally seen during deep sleep states. Theta waves, which resonate at frequencies of 4 to 8 Hz, are often associated with light sleep or deep relaxation and can appear in certain meditative states but not primarily during relaxed wakefulness. Gamma waves, with frequencies above 30 Hz, are linked to cognitive processing, problem-solving, and intense concentration rather than a relaxed state. Understanding these frequency bands helps in differentiating the various states of consciousness and brain activity.