What is the frequency range for Delta EEG waves?

Delta EEG waves are characterized by their frequency range, which is between 0.5 and 4 Hz. These low-frequency waves are most commonly associated with deep sleep states and are crucial for restorative sleep. In the context of neurophysiological monitoring, recognizing delta waves is important when assessing brain activity, particularly when evaluating the depth of anesthesia or identifying disorder sleep patterns. The presence of delta waves during wakefulness can also indicate potential brain dysfunction, making it essential for those in the field to accurately identify this activity and understand its implications in various clinical scenarios.