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Alpha waves are a type of brainwave produced during the early part of Stage 1 sleep. These electrical activity patterns, with a frequency of 8–12 Hz, are also seen in individuals who are relaxed but awake. Compared to beta waves, alpha waves are more synchronized (less variable), have a lower frequency, and a higher amplitude.

Alpha Waves

An individual transitions from a state of being alert and actively solving a complex puzzle to a state of quiet, relaxed wakefulness with their eyes closed. Which of the following descriptions best characterizes the change in their dominant brainwave pattern?

An individual is sitting quietly in a comfortable chair with their eyes closed, feeling calm and relaxed but not yet asleep. An electroencephalogram (EEG) is recording their brain's electrical activity. Which of the following patterns, characterized by its frequency, amplitude, and synchrony, would be most prominent on the EEG readout in this situation?

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