Delta waves are predominant in which stage of sleep?

• A. N1
• B. N2
• C. N3
• D. REM

Answer: (C)

Verified step by step guidance

1. Understand the different stages of sleep: Sleep is divided into several stages, including N1, N2, N3, and REM. Each stage has distinct characteristics and brain wave patterns.
2. Learn about brain wave patterns: Different stages of sleep are associated with different types of brain waves. For example, alpha waves are common in relaxed wakefulness, while theta waves are seen in light sleep.
3. Focus on delta waves: Delta waves are high amplitude brain waves with a frequency of 0.5-4 Hz. They are typically associated with deep sleep.
4. Identify the stage associated with delta waves: Delta waves are most prominent during the N3 stage of sleep, which is also known as slow-wave sleep or deep sleep.
5. Conclude the association: Since delta waves are predominant in the N3 stage, this stage is crucial for restorative sleep processes, such as tissue repair and growth.