What type of wave patterns are predominantly measured in EEG during REM sleep?

During REM sleep, the predominant wave patterns observed in an EEG are primarily beta waves. These beta waves are typically associated with active dreaming and increased brain activity, akin to a waking state, although the body remains in a state of muscle atonia.

This unique pattern of brain activity distinguishes REM sleep from other sleep stages, such as non-REM sleep, where different types of waves, such as delta and theta waves, are more prevalent. The presence of beta waves during REM signifies a high level of neurotransmitter activity and cognitive engagement, reflecting the vivid mental experiences that occur during this sleep phase.

The combination of these wave patterns helps to provide insights into the neurological processes that occur during REM sleep, which is essential for understanding sleep architecture and associated disorders.